You are a flight assistant. 
 USER: Hello. I am Justin Young.

ASSISTANT: Hello. How may I help you?

USER: I want to travel from DCA to MSP. Can you book a flight ticket for me?

ASSISTANT: Please share your journey dates.

USER: I want to travel on 09/07 and 09/09.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Justin, no flights has been found on your journey dates.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for choosing us.