You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Brian Moore. Can you please help me in changing my recent reservation?

ASSISTANT: Sure, I will help you with that. Please wait a while.

USER: Ok, sure.

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

USER: My travelling dates are 02/13 and 02/15.

ASSISTANT: May I know your preferred airport codes.

USER: My travelling airport codes are IAH and SFO.

ASSISTANT: Please wait a while, I will check and inform you.

USER: OK, sure.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is booked, flight number 1001.

USER: Ok, thank you.

ASSISTANT: Thank you for opting us.