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

ASSISTANT: Hello,. How may I help you for today?

USER: Owing to an emergency I had to request you for cancel my reservation. Can you do this for me?

ASSISTANT: Sure, please wait for a minute. Let me first check with your previous reservation and revert you.

USER: OK.

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

USER: OK that is fine, thank you for the information.

ASSISTANT: Thank you for choosing us. Have a good day.