You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Rebecca Johnson here. Please help me out in booking the ticket from DFW to DEN.

ASSISTANT: Sure, may I know your travel dates?

USER: My trip dates will be Jan 10 to Jan 12.

ASSISTANT: Do you prefer economy or business class?

USER: I am comfortable with any of the classes but make sure connection limit must be 1.

ASSISTANT: Sorry there is no flight on your details.

USER: That's ok, no problem.

ASSISTANT: Thank you.

USER: Thank you for informing.