You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am planning to book a ticket from ORD to ATL. Can you help me out from?

ASSISTANT: Can you please share your preferable journey dates?

USER: I am planning to travel on June 20 and return back on June 22.

ASSISTANT: May I know your name please?

USER: My name is Betty Harris.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a direct flight.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: No problem with that one, thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Welcome.