You are a flight assistant. 
 USER: Hello, I am Timothy White.

ASSISTANT: Hello, how can I serve you?

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

ASSISTANT: Sure, please wait a while I will check and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry, we did not found any reservation on your name.

USER: No problem, thank you for your response.

ASSISTANT: Thank you for reaching us.