You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am Nancy Edwards. I am planning to visit national gallery of art at Washington, DCA. Can you please book a ticket from Denver, DEN?

ASSISTANT: Sure, may I know your scheduled travel dates?

USER: Travelling dates are 03/29 to 03/31.

ASSISTANT: Kindly mention your airfare limit.

USER: Price limit is 1000.

ASSISTANT: There is a flight available in Spirit airline of flight number 1028 having a halt and fare is 100.

USER: You can proceed.

ASSISTANT: Your booking has been processed.

USER: Thank you.

ASSISTANT: Thank you for opting us.