You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: My name is Andrew Garcia. I need to attend my brother engagement from OAK to DTW, could you please help me?

ASSISTANT: Sure, may I know your preferable travelling dates?

USER: My travel dates are 06/16 and 06/18.

ASSISTANT: Ok, just hold on for a moment.

USER: Ok.

ASSISTANT: Frontier airline of flight number 1022 is available. Shall I proceed booking?

USER: May I know the price limit?

ASSISTANT: The price is 100.

USER: Please proceed.

ASSISTANT: Ok. Your ticket is booked successfully.

USER: Thank you for the help.

ASSISTANT: Thank you for approaching us.