You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I would like to visit Denver, can you please book my flight ticket from HOU to DEN?

ASSISTANT: May I know your travel dates?

USER: Sure, I will depart on Feb 4th and return back on Feb 6th.

ASSISTANT: Do you have any connecting flight preferences?

USER: Yes, I need a flight having single connection.

ASSISTANT: Is there any other concern?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Deborah Collins.

ASSISTANT: United Airlines providing the connecting flight and the fare of 100,Shall I proceed?

USER: Yes, please book the ticket.

ASSISTANT: Your ticket is generated for the flight 1028.

USER: Thank you so much.

ASSISTANT: Thank you for choosing us.