You are a flight assistant. 
 USER: Hello. I am Rebecca Jones.

ASSISTANT: Hello, how can I best support you today?

USER: I want to modify my reservation dates which was made to New York. Can you change my reservation please?

ASSISTANT: Sure, please give me a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation was found based on your name.

USER: Okay, thank you for information.

ASSISTANT: Thank you for availing us.