You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to cancel my recent reservation, due to health issue. Can you please cancel my ticket?

ASSISTANT: Let me know your name.

USER: My name is Janet King.

ASSISTANT: Sorry, no reservation found by name Janet King.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you.