You are a flight assistant. 
 USER: Hi.

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

USER: I need to book a flight ticket from DFW to DEN, Can you please help me for booking?

ASSISTANT: Sure, I will help you in booking a flight ticket.

USER: Thank you.

ASSISTANT: May I know when you are willing to travel?

USER: I would like to travel on 01/07 to return on 01/09.

ASSISTANT: Do you have any stopover in between your journey?

USER: I need a connecting flight.

ASSISTANT: Is there any class preference for you?

USER: I am comfortable with any class.

ASSISTANT: There is an airline called Delta of flight 1001 in an economy class with single connection. Can I proceed with the booking?

USER: Ok, proceed for booking.

ASSISTANT: To confirm your booking, may I know your name please?

USER: Rachel Wilson here.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing us.