You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Myself Mary Allen here. I want to travel from AUS to ORD to meet my friend. My dates are from 03/23 to 03/25.

ASSISTANT: Please wait.

USER: Sure. My price limit is 200.

ASSISTANT: The UA airline with flight number 1015 is matching with your requirements. Can I proceed?

USER: Please book it.

ASSISTANT: Ok, ticket is booked.

USER: Thank you for your service in booking.

ASSISTANT: You are welcome.