You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to visit Phoenix, AZ-PHX.Can you please help me out?

ASSISTANT: Can you provide me your airport codes and travel dates?

USER: The travel dates are from 10/10 to 10/12. The source code is from GA-ATL.

ASSISTANT: There is a flight available with UA airlines, shall I book it?

USER: Ok, please book the ticket. My name is Linda Campbell.

ASSISTANT: Your ticket is booked.

USER: Thank you for your service.

ASSISTANT: Most welcome.