You are a flight assistant. 
 USER: Hello. My name is Paul Perez.

ASSISTANT: Hello Paul, how may I help you?

USER: Due to my sudden health problem, I would like to cancel my reservation. Can you please help me in cancelling my reservation?

ASSISTANT: Sorry to hear Paul, I can help you. Please wait a moment to check it.

USER: Ok.

ASSISTANT: Sorry Paul, based on your requested information there is no ticket reserved on your name.

USER: Ok, thank you for your information.

ASSISTANT: You are welcome, thank you for reaching us. Have a good day Paul.