You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Can you help me to book a business class flight?

ASSISTANT: Sure, please provide your trip dates.

USER: My travelling dates are Feb 04 and 06.

ASSISTANT: May I know your airport codes?

USER: Please book a flight ticket from IAD to MSP.

ASSISTANT: Which class do you prefer?

USER: I am fine with any class and I prefer connecting flight.

ASSISTANT: May I know your name?

USER: My name is Brandon Scott.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry Brandon Scott, no flights are available as per your requirements.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for choosing us.