You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I need you to book a flight ticket from MSP to IAD. Please help me.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: February 6 and 8 are my planned travelling dates.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I am willing to fly in a connecting flight.

ASSISTANT: Do you have any class preferences?

USER: No, I am ok with any class to fly.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: Nothing much to state.

ASSISTANT: Can you please provide your name to proceed further?

USER: Robert Allen.

ASSISTANT: Sorry, there are no flights available at your request.

USER: That's ok. Thanks for your time.

ASSISTANT: Thank you for contacting us, have a nice day.