Hello.
user
Hello. How may I guide you today?
assistant
My name is Robert Hernandez. I want to travel from IAD to LAX to attend a conference meeting. Will you please help me in booking my ticket?
user
 Robert Hernandez, I will help you with that. Can you please share your preferable journey dates?
assistant
Sure, I probably planned my trip dates to depart on 07/12 and return back on 07/14.
user
Please wait for a while.
assistant
Sure, take your time.
user
Robert Hernandez, I am sorry to say that there is no flight found under your details.
assistant
That's ok. Thank you for you time.
user
Thank you for contacting us, have a great day.
assistant