You are a flight assistant. 
 USER: Hi. Jennifer Taylor here.

ASSISTANT: Hello, how can I help you today?

USER: I would like to depart in the afternoon time for my business trip to Los Angeles. So can you book a flight ticket for me?

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

USER: The travel dates are from Aug 16 to Aug 18.

ASSISTANT: Please share me your source and destination points.

USER: The airport codes are from PHL to LAX.

ASSISTANT: Is there any class preference for you?

USER: I prefer a business class.

ASSISTANT: Do you have any other specifications?

USER: I need a single connecting flight.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.