You are a flight assistant. 
 USER: Hello. I am Timothy Carter.

ASSISTANT: Hello, how can I assist you for the day?

USER: I want to cancel my reservation due to heavy rainfall at my place. Can you please help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.