You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you at this moment?

USER: Can you aid me in booking a flight ticket from LAS to DCA?

ASSISTANT: Sure, we are here to help you in booking.

USER: Thank you.

ASSISTANT: Kindly share if you have any connection preference.

USER: Any flight fine for me.

ASSISTANT: Could you please share your planned travelling dates to proceed further?

USER: Sure, I would like to go on Nov 25th and return back on Nov 27th.

ASSISTANT: May I know if you have any other comforts in between your journey?

USER: Make sure it is in the economy class.

ASSISTANT: To proceed further, can I have your name please?

USER: Myself Nicole Lopez.

ASSISTANT: Ok, please wait a moment I'll search best flight for you.

USER: Sure, take your time.

ASSISTANT: There is an AA airline with flight number 1015 leaving from DCA on Nov 27th with 1 stop over in the midway and the estimate is 200. Shall I book an economy class ticket?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket has been reserved and your e-ticket will sent to your registered email address.

USER: Thank you for booking.

ASSISTANT: It's pleasure to serve you. You're welcome.