You are a flight assistant. 
 USER: Hello, I am Gregory Thomas.

ASSISTANT: Hello, how can I aid you?

USER: I am planning to go for Arts and crafts festival at PA-PHL, can you please help me in booking?

ASSISTANT: Sure. May I know your journey dates?

USER: My planned dates of travel are from 07/16 to 07/18.

ASSISTANT: Do you have any other specifications?

USER: I need a halt in between my journey. Price limit is 200.

ASSISTANT: May I know your origin point?

USER: My source point is at DC-IAD.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: We found a flight with Delta airline with flight number:1001. The price is 100 with a halt. Shall I proceed for booking?

USER:  You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for the response.