You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you today?

USER: I am Gregory Adams. I want to book a flight ticket from DCA to ATL. Could you help me in booking?

ASSISTANT: When would you like to depart and arrive?

USER: My travelling dates are from May 28-30.

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

USER: I need a halt.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: We found a connecting flight with an airline Delta of flight 1025 and cost is 200.

USER: Yes, please proceed.

ASSISTANT: Your ticket has been reserved in an economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.