You are a flight assistant. 
 USER: Hello. Frank Thompson here.

ASSISTANT: Hello, what type of service you are looking for?

USER: I am looking for ticket booking service. Can you do this for me?

ASSISTANT: Sure, I can do it for you, provide me your travelling dates please.

USER: I want to travel on 09/01 and I have to come back on 09/03.

ASSISTANT: Ok, will you please provide me your location airport codes?

USER: Sure. My nearest airport code is DEN and I want to go Phoenix and Phoenix's airport code is PHX.

ASSISTANT: We found a flight for you in Spirit airline with 1 connection. Do you like to proceed with the booking?

USER: Yes, you can proceed.

ASSISTANT: Ok, your ticket is confirmed with the flight number 1001.

USER: Thank you for your help.

ASSISTANT: It's my pleasure to help you.