You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you?

USER: Myself Gary Taylor. I am planning to conduct a meeting at Washington this weekend. Can you please help me in reserving the ticket from MSP to IAD?

ASSISTANT: Sure, I am happy to help you and can you please on what dates that you are willing to travel?

USER: I am planning my holiday trip to visit July 14, and again I will return back on July 16.

ASSISTANT: Do you have any preferences?

USER: My return time is afternoon.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: Not a big deal, anyhow thank you very much for your service.

ASSISTANT: Thank you for reaching us.