Hi, I am Richard Edwards.
Hello. How can I aid you?
Could you please help me to book a flight ticket with single connection from NV to attend a robotic workshop in DC?
Sure,I can help you.
Thank you.
When are you willing to make your trip?
I need to depart on Sept 26th and my return date will be on Sept 28th.
May I know your take off and landing points?
My boarding point is LAS and my destination point is IAD.
 Do you have any specific depart and arrival time for this trip?
I need to return in the evening.
  We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.
No issues, I'll choose any alternative to reach my destination. Thank you.
Thank you for reaching us.