You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Ronald Thomas want to attend my cousin's ring ceremony at Philadelphia, can you book a ticket on 01/16 and 01/18?

ASSISTANT: Sure, I will help you out. Please provide me your location airport codes?

USER: Sure, I want fly from DCA to PHL.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: I found a direct flight with fare 700. Can I proceed with it?

USER: Can you please check for the flight with 1 connection?

ASSISTANT: Please let me check with your request.

USER: Sure.

ASSISTANT: Sorry Ronald, no flights with your requirement.

USER: That's fine, thank you for the information.

ASSISTANT: Thank you for reaching us.