You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Could you help in booking a flight ticket from MA-BOS to NV-LAS.

ASSISTANT: Sure, let me know your name for further process?

USER: OK, my name is Mary martin.

ASSISTANT: OK Mary, may I know your dates of travelling.

USER: OK, my  travelling dates are 05/28 to 05/30.

ASSISTANT: Thank you, please give me a moment.

USER: OK,sure.

ASSISTANT: Thank you for waiting, do you have any limits?

USER: Yes, price limit is 200 and connection limit 1.

ASSISTANT: Yes, I got a flight-1020 which matches your requests. Shall I proceed?

USER: OK, you can proceed with the booking.

ASSISTANT: Thank you, your ticket has been booked.

USER: Sounds good,thank you.

ASSISTANT: Thank you for choosing our service, have a safe journey.