You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I serve you today?

USER: Recently I had a reservation with the name of Barbara Thompson, to attend for horse racing festival. I cannot attend there due to some health issues. Can you assist me in cancelling my recent reservation?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for your time. Unfortunately we found no reservation matching with your name.

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

ASSISTANT: Thank you for reaching us.