You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Betty Roberts here. I want to travel from DC-DCA to MN-MSP to meet my family members. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, may I know your travel dates please?

USER: I want to fly on 08/19 and return date is 08/21. Make sure my price limit is 500.

ASSISTANT: Thanks for waiting. I have found AA airlines which flies with one connection.

USER: Please proceed for booking the ticket.

ASSISTANT: Sure, your flight ticket has been booked with flight number 1018.

USER: Thank you for helping me.

ASSISTANT: Thanks for approaching us.