You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to book a flight ticket from BOS to LAX?

ASSISTANT: When are you planning to make your journey?

USER: My planned travel dates are Dec, 11 and Dec, 13.

ASSISTANT: Do you prefer any lay by in between journey?

USER: Yes, I need a lay by.

ASSISTANT:  Is there any another specifications on your trip, so that I can arrange like that only.

USER: No, thank you.

ASSISTANT: May I know your name please?

USER: Sandra Clark here.

ASSISTANT: Here, I found a flight for you with 1 stopover in economy class and it costs you 300. Can I proceed?

USER: Please proceed.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1004.

USER: Thank you.

ASSISTANT: Thank you for choosing us.