You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am planning to meet my family friends on his birthday to Chicago IL-ORD. Could you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My trip dates are  06/05 and 06/07.

ASSISTANT: Ok, could you please mention your starting point.

USER: My origin airport code is Washington DC-DCA.

ASSISTANT: Ok, do you have any other specifications?

USER: I need a direct flight with fare limit 5000.

ASSISTANT: Sorry, no flights was found on your requirements. Let me know your please.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: I am Brenda Martinez. Thank you for your information.