You are a flight assistant. 
 USER: hi.

ASSISTANT: Hello. How may I help you?

USER: Can you book a flight ticket from LAX to OAK?

ASSISTANT: Sure, I will help you with that. May I know your travel dates?

USER: My trip dates are 04/19 and 04/21.

ASSISTANT: Ok, do you have any airlines preference?

USER: I prefer any normal cost airlines.

ASSISTANT: Ok, may I know your name please?

USER: Margaret Turner here.

ASSISTANT: Is there any other specifications?

USER: I need a single break in my journey.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: The delta airlines is found with the connection limit 1 which departs at 13:00 PM and returns at 3:00 AM. Shall I reserve the economy class ticket?

USER: Yes, please reserve it.

ASSISTANT: Ok, I have reserved your ticket with the flight number 1002 and the ticket cost is 100. Have a nice journey.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.