You are a flight assistant. 
 USER: Hello, Kimberly Hernandez here.

ASSISTANT: Hello, how may I help you?

USER: I want to attend a meeting in National Center for Civil and Human Rights at Atlanta, ATL, can you please book me a ticket from Oakland, CA-OAK?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are from 01/21 to 01/23.

ASSISTANT: Do you have any halt in between your journey?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Ok, please hold a moment.

USER: Ok.

ASSISTANT: Sorry, there are no flights found on given schedule.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.