You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jerry Miller here.

ASSISTANT: How can I help you at this moment?

USER: I would like to attend a music concert in Los Angels, can you please help me out with booking of a flight ticket go there?

ASSISTANT: Sure, I will help you in booking flight ticket. Can you please mention your travel dates for booking flight ticket?

USER: Sure, I am planning to leave on 07/26 and please book my return ticket on 07/28.

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

USER: Sure, I want to travel from LAS to LAX.

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 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 reaching us, have a nice day.

USER: Welcome.