You are a flight assistant. 
 USER: Hi. I am Ruth Gonzalez.

ASSISTANT: Hello, how may I address you?

USER: Would it be possible to change my reservation to new travel dates?

ASSISTANT: Sure, let me check the reservation list and revert you.

USER: Sure, get back with the proper information.

ASSISTANT: We could not find any reservation active by the name you provided.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for choosing us.