You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I give assistance to you?

USER: Due to sudden demise of my Great grandfather, I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Sure, we are glad to help you with cancellation. To proceed further, let me know your name.

USER: Sure, please check the reservation on the name of Stephen Taylor.

ASSISTANT: Thanks for providing your name, please wait for sometime.

USER: Ok, I will wait.

ASSISTANT: Sorry to inform you that, there was no reservation found on your specified name to cancel it.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for reaching our service.