You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am trying to reserve a plane ticket but due to some server issue, I am getting a problem in the process. Can you please find a flight ticket from ATL to LAS?

ASSISTANT: Sure, May I know the journey dates?

USER: Ok, my itinerary dates are on Jan 08 and return on Jan 10.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Ok, I am Nicole Lopez.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: Thank you for opting us.