You are a flight assistant. 
 USER: Hello,. I am Catherine Gonzalez.

ASSISTANT: Hello, what sort of help are you seeking from me?

USER: I would like to attend a seminar in Las Vegas, can you please make a reservation from EWR to LAS?

ASSISTANT: Sure, I am euphoric to help you with booking.

USER: Thank you.

ASSISTANT: Please let me know your journey dates for further booking.

USER: My journey start on Nov 15th and return back on Nov 17th.

ASSISTANT: Do you like to go with a economy class or business class?

USER: I am comfortable to travel in any of the class.

ASSISTANT: Do you require any stopovers in your journey?

USER: Yes, I need a 1 stopover in between journey.

ASSISTANT: Ok, Catherine Gonzalez. Just wait for sometime.

USER: Sure.

ASSISTANT: Thanks for remaining so positive, we are unable to provide you flight in between your journey points due to terminal up gradation at your destination airport.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for communicating with us.