You are a flight assistant. 
 USER: Hi, I am Virginia Hall.

ASSISTANT: Hello. How may I address you today?

USER: I want to book a flight ticket with price under 500, can you please help me with it?

ASSISTANT: Sure, please let me know your preferable travelling dates.

USER: Ok, I have planned to travel on 11/27 and return on 11/29.

ASSISTANT: May I know your exact airport codes?

USER: Yes, my airport codes are MN-MSP and DC-IAD.

ASSISTANT: Is there any connection limit?

USER: Yes, I need a connection in between.

ASSISTANT: Thanks for providing details, we found an AA airline matching your request with one connection and the price 100.

USER: Please go with booking.

ASSISTANT: Your reservation is booked.

USER: Thank you.

ASSISTANT: Thanks for choosing us.