You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Please help me with cancelling my reservation which is on the name Sandra Moore.

ASSISTANT: Sure, I will help you in cancelling. Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting. No reservation was found on your name in our database.

USER: Fine, thank you for the response.

ASSISTANT: Thank you for reaching us.