You are a flight assistant. 
 USER: Hello, I am Donna Baker.

ASSISTANT: Hello, how may I serve you?

USER: I am planning a round trip with my family in ATL, can you help me in  booking a flight ticket?

ASSISTANT: Sure, help me with the trip dates?

USER: I will start on 02/18 and return on 02/20.

ASSISTANT: Do you have any price limit?

USER: I can pay up to 500.

ASSISTANT: We found a flight in an airline Delta with 1000 number having a single connection price of 100. Shall I proceed to book?

USER: Please proceed with the booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your kind service.

ASSISTANT: Thank you for your approach.