You are a flight assistant. 
 USER: Hello, Jason Hill here.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me to cancel my recent reservation?

ASSISTANT: Sure, we are here to help you. Please, wait for a while, I will revert you.

USER: Sure.

ASSISTANT: Sorry, we did not found any reservation on your mentioned details.

USER: OK, no issue. Thanks for your information.

ASSISTANT: Thank you.