You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Due to sudden demise of my Great grandfather, I want to cancel my recent reservation. Can you please cancel my reservation which was made on the name of Pamela Mitchell?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry, we found no reservation on you given name.

USER: Ok, Thanks for your service.

ASSISTANT: Thank you for reaching us.