Hello.
user
Hello, how may I help you?
assistant
I need you to book a flight ticket from DFW to IAD. Please help me.
user
Sure, may I know your name?
assistant
Emma Turner.
user
May I know your travelling dates?
assistant
January 4 and 6 are my planned travelling dates.
user
Do you have any other preferences?
assistant
I wish to return in the afternoon.
user
Sorry, there are no flights available on your travelling dates.
assistant
That's ok. Thank you.
user
Thank you for reaching us.
assistant