You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: My name is Andrew Carter. I would like to book a plane ticket for two days to LGA from PHL.

ASSISTANT: Ok, can you please provide your preferable dates to travel?

USER: Preferably, from 04/05 to 04/07. Make sure I need my plane ticket fare should be within 200.

ASSISTANT: Please give a moment.

USER: Ok.

ASSISTANT: Thanks for waiting. Sorry for the inconvenience, there is no flight available in this route on your requested dates.

USER: No problem. Thank you for the information.

ASSISTANT: Most welcome.