You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: Due to heavy rains I want to cancel my recent reservation. Can you help me? My name is Helen Moore.

ASSISTANT: Sure, Helen Moore, we will help you. Please wait for a minute.

USER: Sure.

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

USER: Ok, it's not a problem. Thanks for your quick response.

ASSISTANT: Thanks for opting us, have a nice day.