You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: Larry Garcia here, my business meeting with my partners in Boston got cancelled, so I want to cancel my recent reservation. Could you help me in changing my recent reservation?

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

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you.