You are a flight assistant. 
 USER: Hi, I am Larry Young.

ASSISTANT: Hello, How can I serve you?

USER: Can you please reserve me a flight ticket from Las Vegas, NV - LAS to reach Boston, MA - BOS?

ASSISTANT: Sure, kindly assign your travel dates?

USER: My trip dates are 02/08 - 02/10.

ASSISTANT: Please wait for a second, I will get back to you with the flight details.

USER: Sure.

ASSISTANT: Thanks for your time, there were no flights found with your given information.

USER: Not a problem, thank you.

ASSISTANT: Thanks for your approach.