You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Carol Robinson. I want to book a  flight ticket on 10/13 and my return would be 10/15.

ASSISTANT: Sure, do you have any specifications?

USER: I need a flight ticket with in 500.

ASSISTANT: Can you share your airport codes for booking?

USER: ATL and SEA are my nearest airport codes.

ASSISTANT: There is a connecting flight with number 1002 in airline Frontier, the fare is 200.

USER: You can proceed it for booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.