You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I would like to cancel my flight reservation, can you please help me?

ASSISTANT: May I know your name please?

USER: My name is Daniel Nelson.

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal.

USER: No problem, thanks for checking.

ASSISTANT: Most welcome.