You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I adrdess you?

USER: I am Elizabeth Taylor. I am planning to go for an live music event in Philadelphia, can you please help me to book a flight ticket with 500?

ASSISTANT: Sure, please provide your travelling days?

USER: I am travelling from LAX to PHL. My journey dates are from 03/21 to 03/23.

ASSISTANT: Please wait.

USER: Make sure that I need a direct flight.

ASSISTANT: Thank you for your information. There are no flights available with your specified connection limit.

USER: Ok, no problem.

ASSISTANT: Thank you for making us to serve you.

USER: Thanks for your information.