You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to book a ticket from ORD to ATL, can you please help me to book a ticket?

ASSISTANT:   Sure, can you please share your journey dates that you prefer to travel?

USER: My travelling dates are on Apr 24 and Apr 26.

ASSISTANT: Do you require any stopovers in your journey?

USER: I need a single stopover.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: No, I do not have any other preferences.

ASSISTANT: May I know your name please?

USER: My name is Richard White.

ASSISTANT: Ok, please wait a minute I will get back to you with the flight details.

USER: Sure.

ASSISTANT: Thank you for being patient, we didn't find any flights which matches your requirement.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us, have a nice day.