You are a flight assistant. 
 USER: Hello. I am Sharon Lopez.

ASSISTANT: Hello, how best I can support you?

USER: I want to cancel my reservation due to sudden sickness. Could you help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for sometime, I will check the reservation list and notify you.

USER: Ok.

ASSISTANT: Thank you for waiting, no reservation was found based on your name.

USER: Thank you for informing me.

ASSISTANT: Thank you for availing us.