You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, please provide your itinerary dates.

USER: Sure, I would like to take off on May 12 and return on May 14.

ASSISTANT: Which class do you prefer?

USER: I prefer business class.

ASSISTANT: May I know your connection limit?

USER: I need  a flight with connection.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: My name Steven Mitchell.

ASSISTANT: Sorry Steven Mitchell, no flights are available on your route.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.