Hello.
user
Hello.
assistant
I'm Kevin Lee.
user
How can I aid you?
assistant
 I am planning to travels from LAS to IAD for a business meeting, can you please help me with booking a flight ticket?
user
May I know your planning dates?
assistant
Sure, my departure date is on 05/15 and the return date is on 05/17.
user
Give me a minute, let me check the details.
assistant
Sure, make sure that the price limit should not exceed 200.
user
Sorry Kevin, I couldn't find any flights on your request.
assistant
Ok, no problem. Thank you for checking.
user
You are welcome.
assistant