You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Owing to an emergency, my planned trip to Washington with my friends has been cancelled. So I want you to cancel my recent reservatio?

ASSISTANT: Sure, may I know your good name please?

USER: Sure, my name is Robert Rodriguez.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found with your name.

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

ASSISTANT: Thank you.