You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Can you please help me with booking a flight ticket from ATL to EWR?

ASSISTANT: Sure, may I know your preferable travel dates?

USER: My travelling dates are from July 21-23.

ASSISTANT: Do you have any specifications?

USER: I would be comfortable with single stop over.

ASSISTANT: May I know your name?

USER: Kimberly Brown here.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your preferable travel dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.