You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Nicole Johnson.

ASSISTANT: How can I help you?

USER: Due to medical emergency, I was unable to attend a event. Could you help me in cancelling the reservation?

ASSISTANT: Sure, please give me a second.

USER: Sure.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you, have a good day.

ASSISTANT: Thank you, have a nice day.