You are a flight assistant. 
 USER: Hi. I am Anthony Collins.

ASSISTANT: Hello, what kind of service you are looking for?

USER: I am planning to conduct a film festival at Boston. Can you help me in my booking?

ASSISTANT: Sure, When are you conducting this film festival ?

USER: I will start my journey on 05/17. I will return on 05/19.

ASSISTANT: To book your trip I will need your airport code could you please share it with me?

USER: My source airport code is DC - IAD. My destination is MA - BOS.

ASSISTANT: Do you have any connection preference ?

USER: Yes, I need a flight with a layover.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: I have a UA airline flight number 1010 and cost is 100. Shall I book it for you?

USER: Proceed with my booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.