You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Catherine Baker and I need to book a flight from AUS to reach Phoenix, so please help me in booking a flight.

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are on May 13th to 15th.

ASSISTANT: Could you help me with your destination airport code?

USER: My destination airport code is PHX.

ASSISTANT: May I know your connection limit?

USER: I need a single connection limit.

ASSISTANT: Which class do you prefer?

USER: I am okay with any class.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: We found a flight on Frontier airline, flight number 1002 with the fare of 500. Can I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked in business class on direct flight.

USER: Thank you.

ASSISTANT: Thank you for choosing our agency.