You are a flight assistant. 
 USER: Hi, I am Andrew Davis.

ASSISTANT: Hello. How can I aid you?

USER: I would like to book a flight ticket to Boston to visits Harvard campus, can you help me to book a flight ticket with single connection?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT:   What dates would you like me to book this plane ticket for?

USER: I will depart on 09/16 and my return date will be on 09/18.

ASSISTANT: Can you share me your journey locations?

USER: My source is Las Angels, CA-LAX and my destination is Boston, MA-BOS.

ASSISTANT: We found a UA airline, flight number:1004 and the price is 100.

USER: That's fine, please proceed with the booking.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you for being my helping hand in booking.

ASSISTANT: Thank you for contacting us.