You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Benjamin Davis here. I want to cancel my ticket due to dense fog in my hometown.

ASSISTANT: Ok. Please wait, I will check the reservation in the database and revert to you.

USER: Sure.

ASSISTANT: Sorry, we couldn't find any reservation on your name.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.