You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I serve you?

USER: I have a conference at Cobo Center in Chicago. Can you book me a ticket on dates from 11/22 to 11/24?

ASSISTANT: Sure, please forward your airport codes?

USER: I want to board from Washington, DC - DCA.

ASSISTANT: Please share do you have any specifications?

USER: Landing is on IL - ORD. Make sure to check a flight with in a price limit of 500.

ASSISTANT: May I know your name?

USER: I am Dennis Edwards.

ASSISTANT: Thanks for giving your details. We found a connecting flight with frontier airline and flight number is 1007.

USER: It is perfect, you can proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for the quick response.

ASSISTANT: Thank you for approaching us. Have a safe journey.