You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Due to health issue,I need to cancel my reservation. Can you please cancel my reservation?

ASSISTANT: Sure, please give me a minute.

USER: Ok.

ASSISTANT: Please provide your name.

USER: Gregory King is my name.

ASSISTANT: Sorry, we did not found any reservation to cancel.

USER: Ok, no issues. Thanks for your response.

ASSISTANT: Thank you for connecting us.