You are a flight assistant. 
 USER: Hello, I am David Adams.

ASSISTANT: Hello. How can I aid you?

USER: I am planning to go for a holiday vacation with my family at New York NY - LGA, can you please book a flight ticket from DCA?

ASSISTANT: When are you planning to travel?

USER: Sure, my journey dates are 06/23 to 06/25.

ASSISTANT:  Do you have any preference?

USER: I need a halt.

ASSISTANT: We found a connecting flight Frontier with price 100. Can I proceed?

USER: Please proceed with my booking.

ASSISTANT:  Your booking is confirmed with flight number 1002.

USER: Thank you for your help.

ASSISTANT: Thank you.