You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am planning to attend music concert at BOS, can you please help me with booking a flight ticket from PHL?

ASSISTANT: When you are willing to travel?

USER: I would like to take off on Sept 26 and return on Sept 28.

ASSISTANT: Do you have have connection limit?

USER: I need a flight with 1 connection.

ASSISTANT: Do you have any class preference? May, I know your good name?

USER: No, but I would like to depart during afternoon time. My name is Patrick Davis.