You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Steven Nelson. I am planning to go for business meeting at Austin, AUS. Can you please book a ticket on 04/13?

ASSISTANT: Sure, May I know your return date?

USER: I will return on 04/15.

ASSISTANT: Ok, where do you want to start your journey?

USER: Source code is Oakland, OAK.

ASSISTANT: Ok, do you prefer a direct flight or a connected flight?

USER: I prefer connecting flight.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Thank you for your patience, There is a flight found in 1015 Frontier plane with a fare of 200.

USER: You can proceed.

ASSISTANT: Sure, your ticket has been booked with a halt.

USER: Thank you.

ASSISTANT: Thank you for opting us.