Hello.
user
Hello, how may I assist you?
assistant
Can you please help me in booking a flight ticket from SEA to IAH?
user
Sure, I will help you out. Please provide me your travel dates.
assistant
Sure, my travelling dates are 04/29 and 05/01.
user
May I know your name?
assistant
Sure, I am Anna Walker.
user
Ok,  there is no flights in your route.
assistant
It's ok, anyway's thank you for checking.
user
Thank you for reaching us.
assistant
Welcome.
user