You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mary Phillips here.

ASSISTANT: How can I assist you today?

USER: I want to reserve my ticket to visit Phoenix, can you please help me to book a ticket from AUS on 08/06?

ASSISTANT: Sure, can you please help me with the destination airport code and the return date?

USER: Ok, my destination airport code is PHX and my return date is 08/08.

ASSISTANT: Ok, let me check for the availability of flight on this route.

USER: Sure, but make sure that the price should not exceed with the cost 200.

ASSISTANT: Mary, there is a flight available with price 100 and the connection is 1 with Frontier airline. Would you like me to proceed with the booking?

USER: Ok, please book this ticket.

ASSISTANT: Your booking is confirmed with 1002 flight number.

USER: Thank you for your help in reserving my ticket.

ASSISTANT: Thank you for opting us.