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

ASSISTANT: Hello, how can I help you?

USER: I am planning to attend a live music event in Washington, can you please help me to book a flight ticket?

ASSISTANT: Sure, Can you share me your travel dates?

USER: My journey dates are from 02/27 to 02/29.

ASSISTANT: May I know your journey locations?

USER: Sure, my journey points are from PHL-DCA.

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

USER: Yes, I need a halt.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Unfortunately there is no flights found on your details.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us.

USER: Thanks for your service.