You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am Anthony King here. I am planning to book a flight ticket from PHL to BOS. Can you please help me with booking?

ASSISTANT: Sure, can you please let me know your journey dates?

USER: My planned journey dates are from June 25 to June 27.

ASSISTANT: Do you have any class preference?

USER: No, I am comfortable with any class.

ASSISTANT: Please mention your connection limit.

USER: I need a connecting flight in my journey.

ASSISTANT: Is there any more specifications?

USER: My depart time should be in the morning.

ASSISTANT: Ok, please stand by. Sorry to inform you that, we did not find any flights matching your details.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for approaching us.