You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can you please let me know how may I help you?

USER: Please book a ticket from Boston, BOS to attend for a live concert.

ASSISTANT: Sure, I will book a flight ticket for you. Can you please tell me the destination airport code?

USER: Sure, my destination is Los Angeles, LAX.

ASSISTANT: Ok, on which dates you want me to search the flight?

USER: My travelling dates are July 18 and July 20.

ASSISTANT: Ok, do you have any specifications?

USER: Yes, I want a direct flight.

ASSISTANT: Ok, I will check for that. In the meanwhile, share your other preferences if any.

USER: I don't have any other preferences.

ASSISTANT: Ok, may I know your name to proceed further?

USER: Sure, Mary Lopez here.

ASSISTANT: The Hawaiian airlines is providing the direct flight-1006 with the ticket cost 100. Shall I reserve an economy class ticket?

USER: Ok, please proceed.

ASSISTANT: Mary Lopez, I have reserved your ticket with the above flight. The flight departs in the afternoon time and returns in the morning time. Have a nice journey.

USER: Thank you.

ASSISTANT: Thank you for approaching us.