You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jonathan Jones here.

ASSISTANT: How can I aid you today?

USER: I want to travel from Las Vegas to Austin for attending an agricultural meeting that can helps in improving my techniques in cultivation. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you in booking flight ticket.

USER: Thank you.

ASSISTANT: Can you please let me know your travel dates for booking flight ticket?

USER: Sure, I am planning to move on 09/28 and please book my return ticket on 09/30.

ASSISTANT: May I know your airport code names for further process?

USER: Sure, I will prefer LAS and AUS as my origin and destination airport codes respectively.

ASSISTANT: Thank you for providing your travel details. I will put the conversation on hold to check the best flights available in your route.

USER: Ok, take your time.

ASSISTANT: Sorry for the inconvenience no flights available in this route as per your requested dates.

USER: Oh! So sad to hear that. Anyway, I will choose another alternative to go there. Thank you for the information.

ASSISTANT: Thank you for contacting us, have a good day.

USER: Welcome.