You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: Actually, I need to cancel my recent reservation due to serious health issue, can you please help me out?

ASSISTANT: Sure, I will help you to cancel your reservation. May I know your name please?

USER: Sure, my name is Catherine Wilson here.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for reaching us, we hope see you again.