You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am William Anderson. Owing to an emergency, I want to cancel my reservation, so please help me in the cancellation.

ASSISTANT: Sure, let me check the status and revert you.

USER: Ok, I will wait.

ASSISTANT: We could not find any reservation by the name you provided.

USER: Not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you.