You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I guide you?

USER: I want to cancel my reservation my meeting got cancelled. Can you help me in changing the reservation made by the name Gregory Young?

ASSISTANT: Sure, give me a moment to track your details.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, there is no reservation exist on your name to cancel.

USER: Ok fine. Thanks for your response.

ASSISTANT: Thank you for consulting us.