You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to cancel my reservation due to health issues. Please help me.

ASSISTANT: Sure, may I know your name please?

USER: My name is Alexander Collins.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Collins, no reservation has been found on your name.

USER: Its ok, thank you for the information.

ASSISTANT: Thank you for choosing us.