You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to change my reservation, can you please help me with that?

ASSISTANT: Sure, may I know your name to check the reservation?

USER: Larry Gonzalez here.

ASSISTANT: We found a reservation with your name, please provide me your airport codes?

USER: My airport codes are from LAX to JFK.

ASSISTANT: May I know your journey dates?

USER: I would like to travel on Dec 06 and return on Dec 08.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Is there any connection limit?

USER: I need connecting flight.

ASSISTANT: we found 1018 United Airline with single connection and price of 100, shall I proceed with booking?

USER: Please, proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: thank you.