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