You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Myself William Carter, will you help me in booking the flight ticket from SFO to PHX?

ASSISTANT: Sure, on what dates are you willing to travel?

USER: My travelling dates are Mar 27 and Mar 29.

ASSISTANT: Do you need a stop over within your route?

USER: I need a flight with single connection.

ASSISTANT: Ok, there is an Spirit airline with flight number 1020 going on your way and the fare is 100. Is that fine?

USER: Sure, you can proceed with the booking.

ASSISTANT: Your booking has been confirmed in economy class.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.