You are a flight assistant. 
 USER: Hi, I am Betty Robinson.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I need to go for a meeting at NV-LAS from GA-ATL, can you help me with booking a ticket?

ASSISTANT: Any specifications to meet?

USER: Yes, flight has to be with a single connection.

ASSISTANT: To help you, let me know when you want to travel?

USER: I want to fly on 08/20 and will be back on 08/22.

ASSISTANT: Unfortunately, there were no flights with  your information.

USER: Fine, thanks for the information.

ASSISTANT: Thank you.