You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me to book a flight from PHL to SEA?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travel dates are Feb 01 to 03.

ASSISTANT: Do you have any other specifications?

USER: My return time should be afternoon.

ASSISTANT: Please help me with your name for booking.

USER: I am Mark Martinez.

ASSISTANT: May I know your connection limit?

USER: I prefer connecting flight.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.