You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Owing to an emergency, my meeting with client got cancelled. So I request you to cancel my existing reservation.

ASSISTANT: Sure, I am glad to help you. May I know your good name to proceed further?

USER: Sure, I have a existing reservation with name Jerry Brown.

ASSISTANT: There is no reservation found on your name in our database.

USER: Ok, no worries at all. Thank you for your information.

ASSISTANT: Thank you for choosing us.