You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please assist me with cancelling my previous booking due to some health issues?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: To cancel your reservation, I need your name, can you please share it with me?

USER: Myself Jonathan Lee.

ASSISTANT: We didn't find any reservation on your name to cancel.

USER: Oh! That's very sad to know. Anyways, thank you for checking.

ASSISTANT: Thank you.

USER: Most welcome.