You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I assist you today?

USER:  I am Karen Jackson.

ASSISTANT: Ok.

USER: Can you please book a flight ticket from Oakland, OAK with connecting flight?

ASSISTANT: Sure, I am here to help you in searching a connecting flight.

USER: Thank you.

ASSISTANT: Could you please help in forwarding your travelling dates?

USER: My travelling dates are, depart on 12/01 and arrival on 12/03.

ASSISTANT: May I know your destination code?

USER: My destination code is DFW.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights found on your requested travelling dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.