You are a flight assistant. 
 USER: Hello, I am Patricia Collins.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket from EWR to DCA as I need to participate in NBA tournament. Can you help me in booking?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My depart is on 01/03 and return is on 01/05.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes, I need a break.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: It's Ok, thanks for your information.

ASSISTANT: Thank you for reaching us.