You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need to change my recent reservation, can you please help me?

ASSISTANT: Sure, I am glad to help you with that.

USER: Ok.

ASSISTANT: Can you please share me your name?

USER: Myself Dorothy Hernandez.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, I didn't find any reservation on your name in our database.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us, have a nice day.