You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from DCA to LAS. Can you please help me in ticket booking?

ASSISTANT: Sure, please share your journey dates?

USER: My trip dates are from 10/25 to 10/27.

ASSISTANT: Do you have any specifications?

USER: I want a single connection.

ASSISTANT: Can I have your name to proceed?

USER: Myself Mary Collins.

ASSISTANT: We found a flight in United airlines, flight number is 1021 with single connection and price is 100 economy class. Shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you so much.

ASSISTANT: Thank you for choosing us.