You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I best serve you today?

USER: Could you please help me to book a flight ticket from MSP to PHL?

ASSISTANT: Sure, can you please mention your depart and arrival dates of your journey?

USER: My travelling dates are Dec 10 and Dec 12.

ASSISTANT: Do you have any connecting flight preferences?

USER: I need a single connecting flight.

ASSISTANT: May I know your name please?

USER: I am Melissa Thompson.

ASSISTANT: No flights found as per your preferences at the moment.

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

ASSISTANT: Thank you for choosing us.