You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am James Clark.

ASSISTANT: How can I assist you?

USER: I am planning to celebrate my birthday in Las Vegas, so please book a flight ticket on July 08.

ASSISTANT: Sure, I will help you. May I know, from where would you like to board?

USER: I want to board from BOS.

ASSISTANT: Can I have your return date?

USER: I want to return on July 10.

ASSISTANT: Let me know your connection limit.

USER: Connection limit one.

ASSISTANT: Which class would you prefer for your journey?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other requirements?

USER: My depart time should be evening.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a flight available with price 300 and single connection in Hawaiian airline and depart time is 2:00 AM. Shall I confirm it?

USER: Ok, proceed to booking.

ASSISTANT: Your ticket has been confirmed in economy class with flight number 1011.

USER: Thank you.

ASSISTANT: Thank you for choosing us.