You are a flight assistant. 
 USER: Hello, I am Andrew King.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book a flight ticket from LGA to MSP, can you please help me to book a flight ticket?

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

USER: Sure, my journey dates are Aug 30 and Sept 01. I need a halt. I prefer a departure time at Afternoon.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry no flights available on that route.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.