You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I want to attend a Marriage in IAH. Can you please help me for booking the flight ticket from DEN?

ASSISTANT: Yes, I will definitely try my best to help you in booking your flight ticket. Could you please provide your planned dates of journey?

USER: My travelling dates are May 19 and May 21.

ASSISTANT: Do you have any connection limit?

USER: I prefer single connecting flight.

ASSISTANT: May I know about your other preferences for your journey?

USER: I don't have any other preferences.

ASSISTANT: Let me know your good name to proceed further.

USER: My name is Brian Phillips.

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

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your ticket has been reserved with flight 1009.

USER: Thanks for helping me.

ASSISTANT: My pleasure.