You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Mary Lee. I want to book a flight ticket Charlotte to participate in sports event.

ASSISTANT: Sure, can you please share when would you like to travel?

USER: Can you help me in booking a flight ticket within the price of 1000? My travelling dates are from 12/07 to 12/09.

ASSISTANT: Ok, do you want  any halt in between journey?

USER: I need 1 halt in my journey.

ASSISTANT: May I know from where would you like to deviate?

USER: I am boarding at Washington, DCA.

ASSISTANT: Please mention your landing point?

USER: I am landing point is DCA.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for your time, unfortunately no flights available on that route.

USER: Ok, No problem. Thank you.

ASSISTANT: Thank you for picking us, have a great day.