You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Ronald Hernandez. I planned to meet my friend in LAX, can you please help me to book a flight ticket from HOU?

ASSISTANT: Sure, tell me your travel dates please?

USER: I prefer to travel on Sep 24 and Sep 26.

ASSISTANT: May I know your departure and return time please?

USER: I would like to return back in evening.

ASSISTANT: Thanks for your time. Sorry there no flights available in the evening time.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: Thank you.