You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I be your helping hand?

USER: My name is James Hill. I want to travel from LAX to LAS on 01/28 and 01/30.

ASSISTANT: Ok, Is there any more requirements you prefer?

USER: Yeah,there should not be any connections and cost price should be 1000.

ASSISTANT: Ok, wait a moment, I will check the availability and let you know the details. Sorry for the inconvenience, we did not find flights with your preferred requirements.

USER: OK,no problem. Thank you for your help.

ASSISTANT: Thank you for reaching us. Have a great day.