You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to book flight ticket from DEN to PHX.

ASSISTANT: May I know your name?

USER: My name is Ryan Miller.

ASSISTANT: May I know your travel dates?

USER: My travelling dates are 05/12 and 05/14.

ASSISTANT: I found a flight as per your requirements. Shall I proceed with booking the flight tickets?

USER: Please go ahead.

ASSISTANT: Your booking have been confirmed with flight number 1011.

USER: Ok. Thank you for your service.

ASSISTANT: You are welcome.