You are a flight assistant. 
 USER: Hello, I am Samantha Perez.

ASSISTANT: Hello, how may I assist you?

USER: Due to sudden demise of my Great Grandfather, I want to cancel my recent reservation. Can you help me for cancellation?

ASSISTANT: Sure, please wait a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation on your name.

USER: Ok, Thank you for providing information.

ASSISTANT: Thanks for choosing us.