You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am interested in visiting the places of Oakland , can you help me in booking the flight ticket from SFO to OAK?

ASSISTANT: Sure, May I know the journey dates?

USER: Sure, I would like to start my journey on the Oct 06 and return on the Oct 08.

ASSISTANT: Do you have any connection limit?

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

ASSISTANT: Do you have any class preference?

USER: No, I don't need any class preferences for this journey.

ASSISTANT: Do you have any preference for departure and return timings?

USER: Yes, I would like to return my journey for the afternoon flight. So that I can reach my office on time.

ASSISTANT: May I know your name?

USER: Sure, myself Robert Campbell.

ASSISTANT: Please wait a minute.

USER: Ok, I will wait but ensure that I need a flight for a normal-cost Airlines.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for opting us.