You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I want to attend meeting in Las Vegas. Can you please help me in booking flight ticket CLT to LAS?

ASSISTANT: Sure, I am gleeful to help you with that. Can you please provide your preferable dates of travelling?

USER: My trip dates are Oct 13 to Oct 15.

ASSISTANT: On whose name I have to book the flight ticket?

USER: Myself Emily Robinson.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Is there any other requirements do you have?

USER: I don't have any other specifications.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Unfortunately there are no flights running on your route with your required preferences.

USER: Ok, no problem. I will choose alternate way to reach my destination. Thank you.

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