You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you today?

USER: Can you help me to book a flight from DFW to MSP?

ASSISTANT: Sure, please share your travel dates.

USER: My travelling dates are 07/08 and 07/10.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any class preference do you have?

USER: I want to travel in business class.

ASSISTANT: Do you need any more specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: My name is Larry Phillips.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for connecting with us.