Hello.
user
Hello, how can I help you?
assistant
Can you please  book a flight ticket from IAD to LAX?
user
Sure, please help me with your journey dates.
assistant
Thank you. I have planned my travel  dates as Sept 09 and Sept 11.
user
Ok, Do you have any class preference?
assistant
No, I am ok with any class.
user
Ok, May I know your connection limit?
assistant
I am looking for single connecting flight.
user
Ok, Is there any other preferences?
assistant
No, I do not have any other specifications.
user
Thank you for providing details, we did not find any flights with your given details.
assistant
Oh! It is sad to hear. Anyway, thank you for  your time.
user
May I know your name?
assistant
Sure, myself Debra Carter.
user
Thank you for choosing us.
assistant
Most welcome.
user