You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: William Taylor this side.

ASSISTANT: How may I help you?

USER: I want to book a flight for my round trip from PHX to celebrate my birthday, can you help me?

ASSISTANT: Sure, please provide me your destination airport code.

USER: I will be travelling on the dates from 11/03, and I will be returning on 11/05. It is a round trip so destination airport code is also PHX.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Taylor, I found a flight with Spirit airlines available with price 200. Shall I book the ticket?

USER: Ok, you can proceed with booking my reservation with this available flight for this journey.

ASSISTANT: Your ticket is confirmed and the flight number is 1014.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.

USER: You are most welcome.