You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I would like to visit Detroit Institute of Arts for my next project, can you please book a flight ticket for me?

ASSISTANT: Sure, may I know your airport codes?

USER: My airport codes are OAK and DTW.

ASSISTANT: Could you please tell me your trip dates?

USER: I will go on 01/01 and return on 01/03.

ASSISTANT: May I know your name please?

USER: Sure, my name is Thomas Brown.

ASSISTANT: Ok, wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, there is a flight for you with 1027 in Frontier airline.

USER: Ok, please proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.