You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Due to bad weather, I want to cancel my reservation. Can you please help me with it?

ASSISTANT: Let me know your name.

USER: Mark Williams here.

ASSISTANT: Sorry, no reservation found by your name.

USER: Ok, not an issue.

ASSISTANT: Thank you.

USER: Thank you.