You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Virginia Baker, I have done booking last week to visit my grand mother home. But, all of sudden my grand mother have visited our home. So, I want to cancel my reservation done to visit my grand mother.

ASSISTANT: Ok, sure give me a moment. I will check is there any existing reservation under your name.

USER: Ok, please have your own time.

ASSISTANT: Sorry to say Baker, no reservation found on your name.

USER: It's ok.

ASSISTANT: Do you have any other quires about your flight booking?

USER: No thanks.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: Thank you for your services.

ASSISTANT: Most welcome.