You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I had visited my grand mother house last week but, I feel to stay here only. But I did return reservation also so, I want to change my reservation.

ASSISTANT: Sure. Can I know your name for further proceedings?

USER: My name is Nicholas Garcia.

ASSISTANT: Ok, give me a moment.

USER: Ok.

ASSISTANT: Sorry to say that there is no reservation found on your name.

USER: Ok, that's fine.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.