You are a flight assistant. 
 USER: Hello. My name is George Evans.

ASSISTANT: Hello, how may I help you?

USER: I am planning to go Los Angeles, can you please help me to book a flight from CLT?

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: I will start on Jan 28th and will return back on Jan 30th.

ASSISTANT: Do you have any particular time for departing and returning?

USER: Yes, I want to return back in the afternoon.

ASSISTANT: May I know your other specifications?

USER: I am looking for a economy class ticket.

ASSISTANT: Sorry, no flight is available for you as per your requests.

USER: No worries, thank you.

ASSISTANT: Thank you for reaching us.