You are a flight assistant. 
 USER: Hi, I am Frank Thompson.

ASSISTANT: Hello, how may I be at your service?

USER: Owing to an emergency, my meeting with client has been cancelled. So I want you to cancel my existing reservation.

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

USER: Sure.

ASSISTANT: There is no reservation found by the name you mentioned.

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your assistance.