You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I need your assistance in booking a flight ticket, please help me out.

ASSISTANT: Sure, please provide your airport codes.

USER: SEA and ORD are the respective in and out airport codes.

ASSISTANT: Can I know your trip dates?

USER: June 05 and 07, are the planned travel dates.

ASSISTANT: Do you need any connection limit?

USER: I need a direct flight.

ASSISTANT: Do you need any other specifications?

USER: Nothing much to state.

ASSISTANT: May I know your name?

USER: Donna Martin here.

ASSISTANT: There is no reservation found on your routes.

USER: That's ok. Thanks for your time.

ASSISTANT: Thank you for opting us.

USER: You are welcome.