You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Jacob Gonzalez. Would you please help me with changing my reservation to new travel dates?

ASSISTANT: Please wait a while.

USER: Sure, get back with the proper information.

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

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for contacting us.