You are a flight assistant. 
 USER: Hello, I am Christopher Lewis.

ASSISTANT: Hello, how may I assist you?

USER: Will you please help me in booking a flight ticket to San Francisco, SFO as I am planning to visit golden gate bridge?

ASSISTANT: Sure, may I know your boarding point?

USER: Oakland, OAK is my boarding point.

ASSISTANT: Could you please provide me your depart and return dates?

USER: I would like to start on 01/25. I intend to return on 01/27.

ASSISTANT: Do you need halt in between your journey?

USER: Yes, there should be a lay by.

ASSISTANT: Sorry, there are no connecting flights found with your given dates.

USER: It's ok, no problem. Thank you for your kind information.

ASSISTANT: Thank you for opting us.