You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Robert Jackson.

ASSISTANT: How can I assist you today?

USER: I want to cancel my recent reservation, due to some health issue. Can you please help me out?

ASSISTANT: Sure, will you please give me a moment?

USER: Ok, take your time.

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

USER: Thank you for the help.

ASSISTANT: Welcome, have a great day.