You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am David Hall, want to travel from LAS to DCA.

ASSISTANT: May I know your trip dates?

USER: My travelling dates are from 07/24 to 07/26.

ASSISTANT: There is a flight for you with 1 connection in Spirit airline and fare is 100. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Most welcome.