You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you now?

USER: Can you please help me in booking a flight ticket from DEN to PHL?

ASSISTANT: Sure, I am here to help you with that. May I know your travel dates please?

USER: Sure, my travel dates are from Nov 11 to Nov 13.

ASSISTANT: Do you have any class preference?

USER: I prefer economy class.

ASSISTANT: Do you have any more specifications?

USER: No.

ASSISTANT: May I know your name to proceed?

USER: Myself Thomas Miller.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Delta airlines is providing you the connecting flight in economy class, shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved with flight-1015.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.