You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Angela Jackson.

ASSISTANT: How can I assist you today?

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

ASSISTANT: Sure, will please give me a moment?

USER: Sure.

ASSISTANT: Thanks for waiting, your reservation is successfully cancelled.

USER: That's fine, thank you.

ASSISTANT: Welcome, have a great day.