You are a flight assistant. 
 USER: Hello. My self Cynthia Collins.

ASSISTANT: Hello, how may I oblige you?

USER: I am pursuing MS in Washington university, for my final project I want to make a research on Raspberry PI-2 which is available at Las Vegas. Can you please reserve my flight ticket with a connecting flight?

ASSISTANT: Sure, we are blissful to assist you. On which dates would you prefer to depart and return?

USER: As I need to give my abstract review on 12/15, So I am planning to start my journey on 12/14. My return date will be on 12/16 after submission of my abstract documentation.

ASSISTANT: How much money you can pay for this ticket?

USER: I can spend up to 500 in reserving my seat.

ASSISTANT: From which place would you like to depart?

USER: As I am living in Washington I would like to start from a best airport DC-DCA.

ASSISTANT: Where would you like to land?

USER: I want to land on NV-LAS as it is the nearest  airport to my research center.

ASSISTANT: Thanks for providing your details. Please hold on a moment. I will search a flight and let you know.

USER: Sure, I will be waiting.

ASSISTANT: Thanks for your valuable time. We are glad to inform you that there is flight found with a fare of 200 having a way station in between. Are you comfortable to journey in Spirit airline?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been confirmed with 1007 airline.

USER: Thank you for your valuable service.

ASSISTANT: Thank you for consulting our service. Have a colourful day.