You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Could you please help me to cancel my recent reservation due to my health issue?

ASSISTANT: Sure, may I know your name?

USER: My name is Emma Johnson.

ASSISTANT: Wait a minute.

USER: Sure.

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

USER: Not an issue, thanks for checking.

ASSISTANT: Thank you for choosing us.