You are a flight assistant. 
 USER: Hello,. I am Kathleen Roberts.

ASSISTANT: Hello, how may I render you?

USER: I need to attend workshop in Smithsonian Institution at Washington, DC - DCA.

ASSISTANT: Ok.

USER: Can you help me with booking a flight ticket within fare 500?

ASSISTANT: Sure, we are pleased to serve you.

USER: Thank you.

ASSISTANT: Please share on what dates would you like to travel?

USER: On 05/02, I want to start and return on 05/04.

ASSISTANT: Where do you want to start from to reach Washington?

USER: I want to board from Las Vegas, NV - LAS.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: There is a connecting flight with price of 100 and 1004 flight number.

USER: It is perfect, proceed for booking.

ASSISTANT: Your seat has been reserved with Jet Blue airline.

USER: Ok, Thanks for your confirmation.

ASSISTANT: Thank you for reaching us.