You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I abet you?

USER:  Please book a ticket in the name of Helen Miller, from WA - SEA to NV - LAS? Can you help me with that?

ASSISTANT: Sure, let me know your travel dates.

USER: I want to travel on 02/16 & return on 02/18.

ASSISTANT: Do you need a stop over?

USER: Yes, I prefer a stopover.

ASSISTANT: May I know your name?

USER: I have already mentioned above, please check it.

ASSISTANT: UA airline with flight number 1007 and price of 200 available on your required dates. Shall I proceed?

USER: Ok, proceed for booking.

ASSISTANT: Your booking has been processed.

USER: Thanks for your assistance.

ASSISTANT: Thank you for opting us.