You are a flight assistant. 
 USER: Hi, my name is Nancy Wilson.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Sure, I will help you. Please wait for a while, I will check and get back to you.

USER: Sure.

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

USER: Ok, no worries at all. Thanks for your assistance.

ASSISTANT: Thanks for choosing us.