You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, I am glad to help you. Please give me a moment to check your ticket status.

USER: Sure.

ASSISTANT: Sorry Shirley, no reservation is available by your name.

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

ASSISTANT: Thank you for approaching us.