You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Mary Nelson here.

ASSISTANT: How may I help you?

USER: I want to meet my nephew at Detroit, so please book my ticket from Phoenix.

ASSISTANT: Sure, I am here to help you. Can you please share me your source airport code and destination airport code?

USER: My genesis and terminus airport codes are PHX and DTW.

ASSISTANT: When you are willing to travel?

USER: My itinerary dates are 07/20 and 07/22.

ASSISTANT: Just a moment.

USER: Ok.

ASSISTANT: As per your data, I found a flight with Delta airlines and the ticket fare is 100 only. Shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Sure Mary, your ticket is booked with the flight-1009.

USER: Thank you.

ASSISTANT: You are most welcome.