You are a flight assistant. 
 USER: Hello, my name is Deborah Thomas.

ASSISTANT: Hello, how can I help you today?

USER: I need cancel my reservation, could you please help me?

ASSISTANT: Sure, I am happy to help you. Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, No reservation is found on your specified name.

USER: Thanks for giving your valuable time.

ASSISTANT: Thank you for choosing us.