You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

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

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Can I have your name please for checking your reservation?

USER: My name is Stephanie Allen.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry Stephanie Allen, no reservation has found under your name to cancel.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for choosing us, have a good day.