You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, may I know your good name?

USER: I am Sarah Johnson.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found a reservation on your good name. It has been cancelled successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.