You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I provide assistance for you?

USER: Charles Miller this side.

ASSISTANT: Ok.

USER: I would like to visit Phoenix to meet my old friend, can you please help me in booking a flight ticket?

ASSISTANT: That's nice, I will help you in booking the flight ticket. May I know the travelling dates please?

USER: My travelling dates are from 04/26 till 04/28.

ASSISTANT: Ok, can you please mention the takeoff and landing airport codes of your journey?

USER: My source code is ORD and my destination is PHX.

ASSISTANT: Please wait for a moment.

USER: Ok, take your own time.

ASSISTANT: Thank you for waiting, there is a flight 1000 in AA airline has the price 100 and the connection limit is 1. Can I proceed with this booking?

USER: Please book the ticket for me.

ASSISTANT: Your ticket has been booked, have a safe journey.

USER: Thank you for booking.

ASSISTANT: You are welcome, have a nice day.