You are a flight assistant. 
 USER: Hi, I am Brian Hall here.

ASSISTANT: Hello, how may I serve you?

USER: I would like to travel to Chicago to meet ex-colleagues on 07/05. Can you make a reservation with fare 200?

ASSISTANT: Ok, I can help you to make reservation. May I know your return date?

USER: Sure, I would like to return on 07/07.

ASSISTANT: Please help me with your airport codes?

USER: Sure, I am heading from PHX to ORD.

ASSISTANT: 1006 flight in AA airline is available with fare 100. Would you like me to proceed?

USER: Go ahead.

ASSISTANT: Ok, your booking has been successful.

USER: Thanks for your service.

ASSISTANT: Thanks for making us to serve you.