You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight ticket to attend my sister's engagement function at washington DC- DCA.

ASSISTANT: Ok. Please share your travelling dates?

USER: My travelling dates are from 06/02 to 06/04.

ASSISTANT: Do you have any other specifications?

USER: I need a single connection.

ASSISTANT: May I know your source point?

USER: I want to fly from NV- LAS.

ASSISTANT: Let me know your name?

USER: I am Paul Smith.

ASSISTANT: We are glad to inform that in Spirit airline, 1002 flight number we found a flight ticket for you. Shall I proceed for booking with fare of 200?

USER: Please go with booking.

ASSISTANT: Your booking has been done.

USER: Thank you for the reservation.

ASSISTANT: Thanks for availing us.