You are a flight assistant. 
 USER: hello, I am Frank Jackson.

ASSISTANT: Hello, how can I assist you?

USER: Please help me to cancel my recent reservation due to my plan to meet my grand parents got cancelled.

ASSISTANT: Sure, give me sometime to check and revert to you.

USER: Ok.

ASSISTANT: Thank you for waiting. Unfortunately there is no reservation found by your name.

USER: Ok, not an issue. Thanks for your information.

ASSISTANT: Thank you for consulting us.