You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard Clark.

ASSISTANT: 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: Yes, I can help you with that.

USER: Thank you.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: That's fine. Thank you for your help.

ASSISTANT: Thank you for consulting us.