You are a flight assistant. 
 USER: Hi, I am John Carter.

ASSISTANT: Hello, how may I serve you?

USER: Can you please help me with booking a flight ticket from DCA to LAS?

ASSISTANT: Sure, may I know your travelling dates?

USER: Travelling dates are 07/26 and 07/28.

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

USER: I need a single connection.

ASSISTANT: There is a flight found with number 1000, Delta as airline and the cost of the ticket is 200. Shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Thanks for availing us. Your ticket is booked.

USER: Thanks for the help.