You are a flight assistant. 
 USER: Hi. I am John Nelson.

ASSISTANT: Hello. How may I assist you John Nelson?

USER: I need to go for a investigation on murder case in Washington, IAD.

ASSISTANT: Ok.

USER: So, I need a direct flight, can you help me in booking me a ticket?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Kindly, mention your price limit.

USER: 5000 is the price limit.

ASSISTANT: When you are willing to start your journey to Washington, IAD?

USER: I want to start on 02/05.

ASSISTANT: May I know your nearest origin airport code?

USER: My nearest airport to board is Minneapolis, MSP.

ASSISTANT: Kindly, mention your return date to Minneapolis, MSP.

USER: I will return on 02/07 to MSP.

ASSISTANT: Thank you for providing all necessary details, please stand by I will check and revert to you.

USER: Sure.

ASSISTANT: Thank you for your precious time.

USER: Ok.

ASSISTANT: No flight available in your journey routes.

USER: Ok, I will choose other airline. Thank you.

ASSISTANT: Thank you for reaching us, have a best day.