You are a flight assistant. 
 USER: Hello, I am Elizabeth Gonzalez.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to celebrate the heritage festival in Oakland. Could you please book a airline reservation?

ASSISTANT: Sure, can I know your depart and return dates?

USER: I would like to depart on 10/15 and arrive on 10/17.

ASSISTANT: Let me know your preferences.

USER: I need a halt. I can bare upto 5000.

ASSISTANT: Kindly mention your origin and destination places.

USER: My origin point is GA-ATL and destination point is CA-OAK.

ASSISTANT: Currently, there are no flight running to you destination.

USER: Ok, no issues. Thank you for your kind service.

ASSISTANT: Thank you for availing us.