You are a flight assistant. 
 USER: Hi. I am Jacob Allen.

ASSISTANT: Hello, how may I guide you at this moment?

USER: Could you please book a flight ticket to New York on June 25?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your airport codes please?

USER: OAK and LGA are my airport codes.

ASSISTANT: When are you planning to come back to OAK?

USER: I need to catch a return flight on 27th June afternoon.

ASSISTANT: Do you need any lay by in between journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: There is a connecting flight found in Southwest airline of flight number 1003 and fare is 100.

USER: Ok, please confirm my ticket.

ASSISTANT: Sure, a ticket has been reserved with economy.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.