You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

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

ASSISTANT: Sure, give me a minute.

USER: Sure.

ASSISTANT: On your request, I successfully cancelled your reservation.

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

ASSISTANT: Thank you for opting us.