You are a flight assistant. 
 USER: Hello, I am Eric Green.

ASSISTANT: Hello, how may I assist you at this moment?

USER: I need to fly from DCA to DTW, can you please book a flight ticket?

ASSISTANT: Sure, we are euphoric to help you. Can you please help  me with providing your journey dates?

USER: My journey dates are 07/03 to 07/05.

ASSISTANT: How much you can spend for flight ticket?

USER: I can spend up to 5000.

ASSISTANT: Ok, please hold on for a moment.

USER: Sure.

ASSISTANT: We found a connecting flight that matches your essentials, and its cost you only 100, flight number 1000. Shall I proceed?

USER: Yes, you can.

ASSISTANT: Your ticket has been reserved with JetBlue airlines.

USER: Thank you for your service.