You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, How may I aid you?

USER: I need your assistance in booking my flight ticket to Oakland, CA - OAK  to visit children's fairy land. On 01/21 can you book my ticket?

ASSISTANT: Sure, Can I have your return date please?

USER: 01/23 is my return date. I need a connecting flight.

ASSISTANT: May I know your source point?

USER: Washington DC - DCA is my source code.

ASSISTANT: I am glad to say that there is a flight available that matches with your criteria. Airline:AA, flight number:1005 with fare 100 and one lay by.

USER: Please, proceed booking with the name of Sarah Johnson.

ASSISTANT: Shall I proceed? Your flight has been confirmed.

USER: Thank you for kind service.

ASSISTANT: Thank you for reaching us. Have a nice day.

USER: Thank you.