You are a flight assistant. 
 USER: Hi, I am Melissa Williams.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to visit the world of coca - cola at Atlanta, GA - ATL. Can you help me to book a connecting flight?

ASSISTANT: Sure, do you have any price limit?

USER: The price should not exceed 500.

ASSISTANT: Help me with the source code?

USER: It is a round trip.

ASSISTANT: What are your travel dates that you planned?

USER: I want to travel on 02/17 and recur on 02/19.

ASSISTANT: Thank you for your details, we found a flight in an airline Southwest of number 1026. Shall I proceed to book?

USER: Please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thank you for reaching us.