You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brian Parker.

ASSISTANT: How can I aid you Parker?

USER: I am planning to celebrate my friend birthday at Chicago ORD. Can you help me with booking a connecting flight?

ASSISTANT: Sure, I am here to assist you.

USER: Thank you.

ASSISTANT: Could you please share your travelling dates?

USER: My travelling dates are 06/05 and 06/07.

ASSISTANT: May I know your take off airport code?

USER: My takeoff airport code is Denver DEN.

ASSISTANT: Ok, do you need direct flight from Denver?

USER: No, I need a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry Brian Parker, no flights available on your requested travelling dates.

USER: Ok, no issues.

ASSISTANT: Thank you for approaching us, have a nice day.

USER: Thank you for your kind information.