You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Robert Nelson here.

ASSISTANT: How can I aid you today?

USER: I want to travel from PHL to LAX for attending a Seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am here to help you. Could you please share your travelling dates?

USER: My travelling dates are from 01/10 to 01/12.

ASSISTANT: May I know your fare limit?

USER: Make sure mu price limit is 200.

ASSISTANT: Ok, please wait for a while.

USER: Ok, I will wait.

ASSISTANT: Sorry, no flights found on your requested travelling dates.

USER: Anyway, thanks for the information.

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