You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to visit Detroit with my old friends. Can you help me to book a ticket?

ASSISTANT: Sure, we are here to help you. Can you please provide your journey airport codes?

USER: My airport codes are SEA-DTW.

ASSISTANT: Ok, please help me with your depart date and return date.

USER: My journey dates are 08/25 and 08/27.

ASSISTANT: Ok, May I know your name?

USER: Timothy Wilson here.

ASSISTANT: Ok, please mention your price limit.

USER: Price should not cross 1000.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a flight in 1002 Frontier plane with a fare of 100. Can I proceed for booking with a halt of economy class?

USER: Yes, Please proceed.

ASSISTANT: Sure, your ticket has been confirmed.

USER: Thank you so much.

ASSISTANT: Thank you for choosing us.