You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Helen Nelson.

ASSISTANT: How may I aid you?

USER: Actually, I got admitted in a hospital due to some health issues.So I prefer not to travel, could you help me in cancelling my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you for that.

ASSISTANT: Ok, please wait for a while, let me check your reservation status.

USER: Sure, take your time.

ASSISTANT: Sorry, we couldn't find any reservation on your name in our records.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you for choosing us.