You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Jeffrey Hill want to visit MSP, can you book a ticket from DFW?

ASSISTANT: Sure, I am happy to help you. Can I know your travelling dates?

USER: Sure, my travelling dates will be 09/12 and 09/14.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.