You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I want to book a ticket from DFW to ATL. Could you book a ticket?

ASSISTANT: Sure, can I know your good name please?

USER: My name is Thomas Hill.

ASSISTANT:  When you are willing to travel?

USER: Depart is by Feb, 17 and return date is Feb, 19.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I would be comfortable with single stop over.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: No.

ASSISTANT: We found a connecting flight 1012 in American Airlines at the price of 100 with economy class. Shall I proceed?

USER: Please book a ticket.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for choosing us.