You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you?

USER: I want to change the reservation which is booked on my name. Can you please change the reservation?

ASSISTANT: OK, please provide your name so that I can check the details? Yes, I can help you in changing your reservation.

USER: Myself Scott Garcia.

ASSISTANT: Sorry, I could not find any reservation on your name.

USER: OK, no problem. Thank you.