You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a flight ticket to attend my sister's wedding at CA. Can you help me?

ASSISTANT: Ok, may I know your planned dates?

USER: June 04th and 06th are my trip dates.

ASSISTANT: May I know your source code?

USER: I would like to board from BOS.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need  a break to buy gift.

ASSISTANT: There is a flight - 1012 available with 1 connection at the price of 100 in economy class. Can I book it?

USER: You can reserve it.

ASSISTANT: Booking done.

USER: Thank you for your help in booking the flight ticket.

ASSISTANT: Thank you for choosing us.