You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you for the day?

USER: I want to book a direct flight ticket to participate in a art expo at GA-ATL.

ASSISTANT: Sure, let me know your journey dates.

USER: 07/16 and 07/18 are my travelling dates.

ASSISTANT: Ok, where you want to start your journey?

USER: I would like to board at IL-ORD.

ASSISTANT: Ok, may I know your name please?

USER: I am Emily Evans.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thanks for your time, no flights were available based on your schedule.

USER: No issue. I will choose another alternative.

ASSISTANT: Thank you for being in touch with us.

USER: Thank you.