You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephen Parker.

ASSISTANT: How can I help you?

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

ASSISTANT: Please wait a moment to check the reservation status.

USER: Thank you.

ASSISTANT: Sorry, no reservation found by your name.

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

ASSISTANT: Thank you.