You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Cynthia Rodriguez here. I would like to change my reservation as there is heavy rainfall at my destination location, can you please help me out with that?

ASSISTANT: Sure, please wait for a moment.

USER: Thank you for accepting my request. Sure, I will wait for your response.

ASSISTANT: Sorry, there is no reservation found on your name in our database to change.

USER: That's ok, no problem. Anyway thank you for checking out.

ASSISTANT: You are welcome.