You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

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

ASSISTANT: Sure, may I know your name please?

USER: I am Samuel Edwards.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: I have found your reservation, as per your request I have cancelled it.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.