You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Could you please help me to cancel my recent reservation due to cancel of my trip?

ASSISTANT: Sure, may I know your name?

USER: My name is William Perez.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there was no active reservation on your name.

USER: Not an issue, thanks for checking.

ASSISTANT: Thank you for choosing us.