You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I amend you today?

USER: My family members are planning to have a dinner with my cousin in Greektown Casino Hotel at Detroit, could you help me in booking?

ASSISTANT: Sure, I am mirthful to help you. Can I know your travelling dates?

USER: Thank you. I will depart on 04/23 and return on 04/25.

ASSISTANT: Help me with your airport codes please.

USER: My origin airport code is BOS and destination code is DTW.

ASSISTANT: Do you need a lay by in between your journey?

USER: Yes, I need a flag stop.

ASSISTANT: Your good name please.

USER: Patrick Mitchell.

ASSISTANT: Thank you for waiting. There is a flight available with Frontier airline, flight number 1021 with fare 200 and a laY by.

USER: Please go ahead.

ASSISTANT: Your booking has been done.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.