You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: My name is Dennis Roberts. I want to go for my birthday shopping at Chicago, ORD. Can  you help me in book a flight ticket from Atlanta, ATL.

ASSISTANT: Sure, can you please mention your price limit?

USER: Price limit is 5000.

ASSISTANT: Ok, may I know when would you like to travel?

USER: I will fly on 10/17 and will be return 10/19.

ASSISTANT: Do you have any other restrictions to be met?

USER: I need a direct flight to my destination.

ASSISTANT: Ok, please hold a moment.

USER: Sure.

ASSISTANT: Thanks for your time, sorry, unfortunately no flight available on that route.

USER: Ok, No problem. Thank you.

ASSISTANT: Thanks for availing us, have a great day ahead.