You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I need to book a flight ticket from MSP to IAD, can you help me in booking a flight ticket?

ASSISTANT: May I know your trip dates?

USER: Sure, my scheduled dates are Sep 29 and Oct 1.

ASSISTANT: Do you have any connecting flight preferences?

USER: I prefer maximum one connection.

ASSISTANT: Is there any other concern?

USER: No.

ASSISTANT: May I know your name please?

USER: Sure, Sharon Lee here.

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

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Thank you for choosing us.