You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: On 05/12 I need to catch flight from Chicago to attend meeting in San Francisco. Can you help me in booking flight ticket?

ASSISTANT: Sure, can I have your airport codes?

USER: ORD and SFO are my airport codes.

ASSISTANT: When will you start your journey to San Francisco?

USER: I will start on 05/12 and return on 05/14.

ASSISTANT: May I have your name please?

USER: Sure, Alexander Nelson is my name.

ASSISTANT: There is a connecting flight with price 100, flight umber is 1020. Shall I make a move?

USER: Yes, please move to booking process.

ASSISTANT: Your ticket has been confirmed with AA airlines.

USER: Thanks a lot for booking.

ASSISTANT: Thank you.