You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Margaret Jackson.

ASSISTANT: How may I assist you?

USER: Due to high fever, I am Unable to travel. So, can you please cancel my ticket?

ASSISTANT: Sad to hear, I am here to help you. Please wait a moment.

USER: Ok.

ASSISTANT: Jackson, no reservation has been found on your name in our database.

USER: That's fine, thank you.

ASSISTANT: Thank you for approaching us.