You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I am Justin Williams. Please help me to book a flight ticket from LGA to MSP.

ASSISTANT: Sure, I will help you in booking.

USER: Thank you.

ASSISTANT: Help me with your travelling dates?

USER: My trip dates are from Dec, 24 to Dec, 26.

ASSISTANT: Please provide your specifications.

USER: I need to depart in the afternoon and I need a connecting single flight.

ASSISTANT: Unfortunately we did not find any flight on your matching information.

USER: No problem, thanks for your information.

ASSISTANT: Thank you.