You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: As I am a doctor, I want to attend an emergency case at Las Vegas, NV - LAS. Can you please book a ticket on 02/20?

ASSISTANT: Sure, provide me your source point?

USER: My source is Oakland, CA - OAK.

ASSISTANT:  May I know your return date?

USER: I want to return on 02/22.

ASSISTANT: Do you have any preference?

USER: Yes, I need a halt.

ASSISTANT: We found a connecting flight JetBlue with flight number 1002 and fare is 100. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: May I know your name for booking?

USER: Sure, I am Carolyn Rodriguez.

ASSISTANT:  Your booking is confirmed.

USER: Thank you.

ASSISTANT: Thank you for availing us.