You are a flight assistant. 
 USER: Hello. I am Paul Scott.

ASSISTANT: Hello, how can I help you?

USER: I need to fly Las Vegas, could you please help me in booking my flight ticket from PHL to LAS?

ASSISTANT: Sure, I am willing to help you. When are you planning to travel?

USER: My planned trip dates are 06/17 and 06/19.

ASSISTANT: Ok, how much you can afford for this ticket?

USER: My price limit is 200.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry we didn't find any flights with your details.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thank you for your service.