You are a flight assistant. 
 USER: Hello, I am Joshua Harris.

ASSISTANT: Hello, How can i of your assistance today?

USER: I want to book a flight with range of 200 to visit White rock lake at Dallas. Can you be my helping hand in booking my ticket from DCA?

ASSISTANT: Sure, could you please share your destination point?

USER: My destination point is DFW. There should be a connecting flight.

ASSISTANT: Now, please tell your travelling dates.

USER: Travel dates are 12/11 to 12/13.

ASSISTANT: Ok, I will check with connecting flight also, please wait.

USER: Sure.

ASSISTANT: There is Frontier airline with flight number 1002.May I proceed to book?

USER: Please proceed with booking.

ASSISTANT: Thanks for approaching us, Your ticket is confirmed.

USER: Thank you for assisting me.