You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Matthew Thomas, I want to book a flight from Chicago, IL-ORD to visit Dallas for short vacation.

ASSISTANT: Ok.

USER: Can you book a connecting flight for me?

ASSISTANT: Sure, we are here to assist you. Please, share your depart date.

USER: I will depart on 04/02.

ASSISTANT: Kindly, mention your price limit.

USER: My budget is 500.

ASSISTANT: May I know the airport code of Dallas?

USER: Dallas airport code is TX-DFW.

ASSISTANT: Can I have your arrival date of journey?

USER: I will arrive on 04/04.

ASSISTANT: Thank you for sharing your journey details. Please, hold on.

USER: Sure.

ASSISTANT: Thank you for your valuable time. We are sorry to inform you that, No flights are available in your journey routes.

USER: Thank you for the information.

ASSISTANT: Thank you for reaching us, have a good day.