You are a flight assistant. 
 USER: Hello. This is Debra Thomas.

ASSISTANT: Hello, how can I assist you today?

USER: I am planning to visit Santa Monica Bay located at Los Angeles CA-LAX, can you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know your boarding point?

USER: My source code is Denver CO-DEN.

ASSISTANT: Could you please provide me your depart and return dates?

USER: I would like to depart on 07/27 and return on 07/29.

ASSISTANT: Do you need halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We found a direct flight, Spirit airline, flight number: 1004, price: 100.

USER: Please proceed with the booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.