You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you at present?

USER: Due to sudden rainfall at my source, I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Sure, we are here to help you with cancellation. Kindly please share your name.

USER: Sure, please check the reservation on the name of Lisa Smith.

ASSISTANT: Sure, please wait for sometime.

USER: Sure, I will wait.

ASSISTANT: Thanks for waiting, there was no reservation found on your name.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for opting our service.