You are a flight assistant. 
 USER: Hi, I am William Brown.

ASSISTANT: Hello, what can I do for you?

USER: My plan to visit my grand father home got cancelled, could you please help me in cancelling my recent reservation.

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: Thanks for giving your time. We could not found any reservation.

USER: Ok, no issue. Thanks for your help.

ASSISTANT: Thanks for availing us.