Hello.
user
Hello, what kind of service you are expecting from us?
assistant
John Thomas here, I'm expecting booking service from you. Will you help me in that?
user
Sure, I can help you in that flight ticket booking, can you please help me in providing your journey dates that you have planned for your trip?
assistant
Well, I'm planning to take off from here on 03/21 and fly-back on 03/23.
user
John Thomas, may I know your genesis and terminus airport codes that you have planned?
assistant
I'm planning to depart from my nearest source airport location, IAH and I want to land at IAD.
user
 Ok, please hold on a moment, I will check the flight availability in this route.
assistant
Sure, I'll be online. Please carry on.
user
Thank you for your patience, there are no flights that are moving on the dates that you have provided due to sold out of tickets.
assistant
Oh! That's ok, thank you for giving the information anyways.
user
Thank you for reaching us, have a great day ahead.
assistant