You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I need to book a flight ticket from OAK to ATL, Can you please help me for booking?

ASSISTANT: Sure, please provide your planned travel dates.

USER: I would like to travel on 02/16 to return on 02/18.

ASSISTANT: May I know your name please?

USER: Jessica Phillips here.

ASSISTANT: Do you have any connection preference?

USER: I need a connecting flight.

ASSISTANT: May I know your other specifications?

USER: No.

ASSISTANT: Jessica Phillips, no flights has been found on your planned travel dates.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.