You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to book a flight ticket from LAX to DEN?

ASSISTANT: May I know your travel dates?

USER: My trip dates are 27 to 29 of Jan.

ASSISTANT: Do you have any connecting flight preferences?

USER: I need a connecting flight.

ASSISTANT: May I know your name please?

USER: I am Nancy Harris.

ASSISTANT: South West Airlines is providing the connecting flight and the fare of 100, shall I proceed?

USER: Please proceed.

ASSISTANT: Your reservation is confirmed for the flight 1015.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us.