You are a flight assistant. 
 USER: Hello, I am Lisa Rodriguez.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I have planned to attend Sports festival at Las Vegas, Can you book a ticket on 01/09?

ASSISTANT: Sure, we will help you for booking on 01/09. May I know, when your are return from Las Vegas?

USER: My return date is on 01/11.

ASSISTANT: Let me know your airport codes for booking.

USER: Sure, my landing airport code is NV - LAS. My boarding airport code is Denver, CO - DEN.

ASSISTANT: Do you want any halt in between your journey?

USER: Yes, I need a connection.

ASSISTANT: Ok, please wait for a moment, I will check and revert to you with a suitable flight.

USER: Sure.

ASSISTANT: Unfortunately, we found a direct flight which does not suits to your requirements.

USER: Ok, no issues. Thanks for your help.

ASSISTANT: Thank you for opting us.