You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Charles Martinez, want to travel from IAD to PHX.

ASSISTANT: May I know your journey dates?

USER: My travelling dates are from 04/27 to 04/29.

ASSISTANT: There is a flight for you with 1 connection in Frontier airline and fare is 200. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Most welcome.