You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may i benefit you?

USER: I am a techie and I need to attend a workshop on ORACLE in Las Vegas, NV - LAS with my colleagues. Can you help me in booking a connecting flight?

ASSISTANT: Sure, may I know where are you heading from?

USER: My source is Oakland, CA - OAK.

ASSISTANT: Do you need a way station?

USER: Yes, I already mention above.

ASSISTANT: Kindly share your travel dates.

USER: My trip dates are from 03/27 to 03/29.

ASSISTANT: May I know your name?

USER: My name is Nancy Collins.

ASSISTANT: Thanks for giving your details.

USER: Ok.

ASSISTANT: There are no flights at this moment on your requested dates.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.