You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, I can help you out. Please wait a while.

USER: Sure, take your own time.

ASSISTANT: Thanks for being waiting. We didn't found any reservation by this name.

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

ASSISTANT: Thank you for picking  us.