You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Katherine Smith, I want to cancel my reservation due to health issue.

ASSISTANT: Sure, I will help with that. Please give me a moment.

USER: Ok, sure.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

USER: It's ok, anyway thank you for assisting me.

ASSISTANT: Welcome, have a great day.