You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, please tell me for what help you approached us?

USER: Can you help me to make a flight reservation to travel to MSP from IAD?

ASSISTANT: Sure, please tell me your good name.

USER: I am Scott Allen.

ASSISTANT: Ok, may I know your travelling dates?

USER: My preferable travelling dates are 08/13 and 08/15.

ASSISTANT: Allen, no flight is found as per your planned travelling dates.

USER: It's not a problem, I will try in another way to reach there. Thanks for your helping.

ASSISTANT: Ok, thank you for choosing us.