You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Due to some financial issues, please help me in changing my existing reservation.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: May I know your name please?

USER: My name is Elizabeth Hill.

ASSISTANT: There is a reservation on your name, please share your travel dates.

USER: My travel dates are 12/16 and 12/18.

ASSISTANT: Can I know your desired airport codes please?

USER: My nearest airport codes are MSP and LAX.

ASSISTANT: Please wait a while. There is a flight with connection limit 0 and fare 200, shall I proceed for booking?

USER: Ok, please proceed with my booking.

ASSISTANT: Your ticket is booked, flight number 1011.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us. Have a nice day.