You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: I want to cancel my reservation due to heavy snowfall at my destination place, so please help me.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Sure, my name is Angela Perez.

ASSISTANT: Please give me a minute, I will check the reservation list and get back to you.

USER: Sure.

ASSISTANT: Thanks for your patience, no existing reservation was found on the name of Angela Perez in the database.

USER: No worries, thanks for your effort.

ASSISTANT: Thank you for choosing us.