You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance to you?

USER: Please help me out in booking the ticket from BOS to ORD.

ASSISTANT: Sure, we are here to assist you. May I know your itinerary dates?

USER: My trip dates will be Aug 8 to Aug 10.

ASSISTANT: Do you need any way station in your journey?

USER: I need a direct flight.

ASSISTANT: Is there any specific time to travel?

USER: No.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: Paul Thompson is my name.

ASSISTANT: Sorry to inform you that, there are no flights available on your requested dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.