You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I have planned to visit Houston but, due to some problems it has been cancelled. Can you please cancel my reservation?

ASSISTANT: Sure, can I have your name please?

USER: Sure, I am Ruth Green.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, no flight reservation found with your given name.

USER: Ok, Thank you for providing information.

ASSISTANT: Thank you for choosing us.