Hello.
user
Hello. How can I help you?
assistant
Can you please help me to search a flight from Las Vegas, NV-LAS?
user
Sure, may I know your destination code?
assistant
The destination code is DC-IAD.
user
Can you please tell me your travel dates?
assistant
The travel dates are 02/18 to 02/20.
user
May I know your name?
assistant
Sure, my name is Ronald Lee.
user
Sorry, I didn't find any flight for you.
assistant
Ok, no problem. Thank you for your information.
user
Thank you for opting us.
assistant