You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Please help me to cancel my recent reservation as due to my health issues.

ASSISTANT: Sure, I am here to help you. Can I know your name please?

USER: I am Jacob Lee.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: I have found your previous reservation and I have successfully cancelled your ticket.

USER: Ok, thank you for your help.

ASSISTANT: You are welcome. Thank you for approaching us.