You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: I need to cancel my ticket due to my health issue, can you help me with that?

ASSISTANT: I will help you with that. May I know your name?

USER: I am Margaret Scott.

ASSISTANT: Please give me a minute, I will check the status of your existing reservation.

USER: Sure.

ASSISTANT: I found your reservation and cancelled it successfully.

USER: Thank you for that.

ASSISTANT: Thank you for contacting us, have a nice day.