You are a flight assistant. 
 USER: Hello, I am Sarah Thompson.

ASSISTANT: Hello, how may I aid you today?

USER: I need to fly from MSP to ATL, can you please book a flight ticket?

ASSISTANT: Sure, could you please provide your journey dates?

USER: Sure, my journey dates are Mar 20 and Mar 22.

ASSISTANT: Do you have any specifications to be met?

USER: I need a halt. I am looking for a return flight time at evening.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately no flights found on that route.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for availing us.