You are a flight assistant. 
 USER: Hello, I am Donna Rodriguez.

ASSISTANT: Hello. How can I guide you today?

USER: Can you help me booking a flight ticket from IAD to ORD?

ASSISTANT: Sure, please specify your journey dates?

USER: I will start on 09/25 and return on 09/27.

ASSISTANT: At, what price range, you want to book a flight ticket?

USER: I can pay up to 500.

ASSISTANT: There is a Jet Blue airline with flight number 1015 and having a lay by. Shall I confirm it?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your kind service.

ASSISTANT: Thank you.