You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I'm Kimberly Hill. I have cancelled my trip due to health issue, can you please help me to cancel my recent reservation?

ASSISTANT: Sure, please give me a minute to check your reservation status.

USER: Ok.

ASSISTANT: I found your reservation and I have successfully cancelled your reservation.

USER: Ok, thank you for your help.

ASSISTANT: Thank you for choosing our service.