Hello. I am Helen Hall.
user
Hello, how may I assist you?
assistant
I have to attend my friend's wedding at Las Vegas, could you please help me with booking a flight ticket?
user
Sure, what are your planned dates to travel?
assistant
I would like to take off on 12/22 and return on 12/24.
user
Ok, may I know your codes of airport?
assistant
My nearest source airport code is IAD and destination airport code is LAS.
user
Sorry to say, there were no flights to Las Vegas on 12/22.
assistant
That's ok, I will find an another alternate way to complete my trip.
user
Ok, thank you for reaching us. Have a nice day.
assistant
Thank you for your service.
user