You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to visit my children, could you book a ticket for me?

ASSISTANT: Yes, sure. Could you provide me your travelling dates?

USER: I am travelling on 08/11 and 08/13.

ASSISTANT: Could you provide me your airport codes?

USER: My airport codes are DEN and ATL. My price limit is 200.

ASSISTANT: I found a flight as per your requirements.

USER: Please confirm my ticket.

ASSISTANT: Flight 1004 with 1 connected flight, which costs 200 in UA airline.

USER: Thank you for your help.

ASSISTANT: May I know your name for booking the flight?

USER: My name is Barbara Smith.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.