You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michael Phillips.

ASSISTANT: How can I aid you today?

USER: I am planning to book a ticket to attend a meeting at HOU. Can you please help me out from LAX?

ASSISTANT: Sure, I will aid you with that. Could you please mention your preferable travel dates?

USER: I would like to travel on Apr 14 and return back on Apr 16.

ASSISTANT: Do you have any another specifications?

USER: Yes, my depart and return time should be afternoon.

ASSISTANT: Ok, please wait a moment.

USER: I am looking for a business class.

ASSISTANT: Ok, I will check with that.

USER: Sure.

ASSISTANT: Sorry no flights are available in this route as per your requested dates.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching us, have a nice day.