You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: This is James Carter from Chicago.

ASSISTANT: OK.

USER: I would like to book a ticket from Chicago to Phoenix for attending a family function. Can you please help me in booking?

ASSISTANT: Sure, please share me your travelling dates?

USER: I would like to start on 03/16 and need to catch return flight on 03/18.

ASSISTANT: Kindly assign me your airport codes?

USER: My boarding point is at IL-ORD and landing is at PHX.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: We found 1009 AA airline with single connection and price of 100. Shall I proceed?

USER: Ok, you can go ahead.

ASSISTANT: Your booking is done.

USER: Thank you for assisting me.

ASSISTANT: Thank you for reaching us.