You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Due to my ill health, I would like to cancel my recent reservation. Please help me out.

ASSISTANT: Sure, could I have your name please?

USER: My name is Ronald Williams.

ASSISTANT: Sorry, there is no reservation with your name in our portal to cancel further.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for consulting us, have a great day.