You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Recently I had a reservation with the name of Shirley Moore, to attend for horse racing festival. I cannot attend there due to some health issues. Can you help me to cancel my recent reservation?

ASSISTANT: Sure, please wait a while I will check and let you know.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry, we did not found any reservation on your name.

USER: Ok, not a big problem. Thanks for your response though.

ASSISTANT: Thank you for availing us.