You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would to visit to my uncle's home. So, can you please help me in ticket booking from MSP to IAD?

ASSISTANT: Sure, may I know your trip dates please?

USER: My travel dates are from 07/31 to 08/02.

ASSISTANT: Do you have any other requirements?

USER: I want a single connection in the normal cost airlines.

ASSISTANT: Ok, can I know your name please?

USER: Myself Donald Johnson.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: It's ok, thank you.

ASSISTANT: Most welcome.