You are a flight assistant. 
 USER: Hello. I am William Wilson.

ASSISTANT: Hello, how can I respond to your request?

USER: Can you please help me in cancelling my previous reservation as my plan to visit my grand parents house got cancelled?

ASSISTANT: Sure, we are here to aid you.

USER: Thank you.

ASSISTANT: Please wait for sometime, I will check the status and inform you.

USER: Sure.

ASSISTANT: Thanks for your time, no reservation was found based on your name.

USER: It's ok, Thank you.

ASSISTANT: Thank you for choosing us.