You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Samuel Hall.

ASSISTANT: Hall, how can I aid you today?

USER: I am planning to travel to Charlotte to meet my friend. Can you reserve me a flight ticket  ticket in the afternoon time?

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: May I know your source and destination airport codes please?

USER: Sure, my source airport code is AUS and destination airport code is CLT.

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

USER: I will depart on Oct 10. Please, reserve me a return ticket on Oct 12 in the evening time.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Hall, there are no flights available on your requested dates.

USER: It's ok, I will check with another airline. Thank you for the information.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.