You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Rebecca Turner. I want to book a ticket from ORD to ATL, to visit the High Museum of Art. Can you help me out?

ASSISTANT: Sure, I am glad to help you. Could you please provide me your travel dates?

USER: Ok, my travelling dates should be 10/25 and 10/27.

ASSISTANT: Ok, please be on hold for a while.

USER: Sure, get back with good airlines.

ASSISTANT: Sorry to say you, there is no flight available on your preferred dates.

USER: That's ok, thanks for checking.

ASSISTANT: You are most welcome.