You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Charles Garcia.

ASSISTANT: How can I help you?

USER: Can you help me in cancelling my reservation, as my business meeting is cancelled?

ASSISTANT: Yes, I can help you with that.

USER: Ok.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us.