You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ray Nelson.

ASSISTANT: How can I aid you?

USER: I want to book a flight from LGA to ATL, can you help me with that?

ASSISTANT: Sure, please provide your travel details.

USER: My travel dates are 01/12 and 01/14.

ASSISTANT: Do you have any preferences?

USER: I need a direct flight. And my return time must be in evening.

ASSISTANT: Sorry, I did not find any flights for you.

USER: That's ok. Thank you.

ASSISTANT: Thank you for connecting us.