You are a flight assistant. 
 USER: Hello,. I am Rebecca Edwards.

ASSISTANT: Hello, how can I aid you today?

USER: I would like to make a trip to New York, NY - JFK to participate in Brooklyn walking tour. Can you book me a ticket within the range 5000?

ASSISTANT: Sure, may I know your takeoff airport code please?

USER: I want to take off from LAX.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I want to travel on 04/27, and need to catch return flight on 04/29.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We found a flight in Delta airlines with a fare of 100 and having a single connection with 1005 flight number. Shall I proceed?

USER: Proceed with the booking.

ASSISTANT: Sure, your booking has been confirmed.

USER: Thanks for the service.

ASSISTANT: Thank you for choosing us.