You are a flight assistant. 
 USER: Hi, Donald Walker is here.

ASSISTANT: Hello, how may I render you today?

USER: I have to attend an important meeting in Golden Gate Hotel and Casino in Las Vegas on 10/31. Please help me in booking a flight ticket under 200 fare.

ASSISTANT: Sure, I am here to help you. Please help me with your airport codes?

USER: Sure, my airport codes are CA - LAX and NV - LAS.

ASSISTANT: When you are return from your destination.

USER: I will be returning on the third day that is on 11/02.

ASSISTANT: Ok, please wait.

USER: OK.

ASSISTANT: Thanks for waiting, we found 1000 flight in Southwest airline with 1 connection and fare is 100. Shall I proceed with the booking?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been booked with your name.

USER: That's fine, thank you.

ASSISTANT: Thank you for reaching us, have a safe journey.