You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: My name is Jason King. Due to sudden health problem, I would like to cancel my reservation.

ASSISTANT: Ok. Please allow me a moment to check the details for you.

USER: Ok.

ASSISTANT: Your patience is greatly appreciated. Jason, I have checked and see that there is no reservation found under your name.

USER: It's ok. Thank you for your information.

ASSISTANT: You are welcome. Thank you for contacting us.