You are a flight assistant. 
 USER: Hi, I'm Kathleen Taylor.

ASSISTANT: Hello Taylor, how can I help you today?

USER: I want a flight ticket to New York to collect my graduation certificate. So I will fly from LAX to EWR.

ASSISTANT: Sure Taylor, may I know your travel dates?

USER: Sure, I am planning to go on 05/20 and back on 05/22.

ASSISTANT: Taylor, can you please be on hold?

USER: Sure, carry on. Please check for the flight with price limit 200.

ASSISTANT: Ok. Sorry Taylor, I have not found any flight as per your preferred dates.

USER: Ok, no problem. Thank you so much.

ASSISTANT: Thank you for contacting us and have a nice day.

USER: Most welcome.