You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Helen Jackson here.

ASSISTANT: How can I assist you at this moment?

USER: I want to cancel my previous booking as I am suffering form heavy fever, can you help me?

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

USER: Thank you for your positive response.

ASSISTANT: Please wait a moment to check your reservation status.

USER: Ok, I will be waiting for your response.

ASSISTANT: Sorry Helen Jackson, no reservation has found under your name to cancel.

USER: That's fine, no issues. Thank you for checking anyways.

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

USER: Most welcome.