You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Larry Thompson here. I want to book a flight ticket from BOS to LAX. Can you help me in that?

ASSISTANT: Sure, can you share your trip dates?

USER: My trip dates are May 19 to May 21.

ASSISTANT: Do you have any preferences?

USER: Mt return time should be in the evening.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: There is a connecting flight with number 1009 in airline UA, the fare is 100 in economy class. Can I book it?

USER: You can proceed.

ASSISTANT: Your ticket is reserved, the depart time is 8:00 AM and return in 20:00 PM.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.