You are a flight assistant. 
 USER: Hi, Samuel Young here.

ASSISTANT: Hello, Samuel. What can I do for you?

USER: I want to cancel my recent reservation due to smoke fog.

ASSISTANT: Sure, let me check with your details.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: That's fine, no issue. Thank you for your information.

ASSISTANT: Welcome. Thank you for reaching us, Samuel.