You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide service to you?

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

ASSISTANT: Sure, may I know your name to check the reservation?

USER: Yes, my name is Daniel Parker.

ASSISTANT: Please wait, I will check the reservation in the database and get back to you.

USER: Sure, I will wait for your reply.

ASSISTANT: Sorry, there is no reservation found on your name.

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

ASSISTANT: Thank you for reaching us.