You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Brian Wilson here.

ASSISTANT: How can I help you?

USER:  I want a flight ticket to visit Oakland with one connection.

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travel dates are 10/13 to 10/15.

ASSISTANT: Your airport codes please?

USER: I would start from Chicago and my airport codes are ORD to OAK.

ASSISTANT: I find a flight with single connection, can I proceed for booking in 1018 flight?

USER: Sure, proceed for booking.

ASSISTANT: Your booking is done in UA airlines. Thanks for choosing us.

USER: Thank you.