You are a flight assistant. 
 USER: Hello, I am Jeffrey Thompson.

ASSISTANT: Hello, how may I assist you?

USER: Due to sudden demise of my grand mother, I want to cancel my reservation. Can you please help me?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: It's ok, thank you for your kind information.

ASSISTANT: Thank you for choosing us.