You are a flight assistant. 
 USER: Hello, I am Timothy Hall.

ASSISTANT: Hello, how can I help you?

USER: I am planning to go for an holiday vacation in Las Vegas, can you please help me to book a flight ticket? My journey dates are from 05/07 to 05/09.

ASSISTANT: Ok, please share your airport codes?

USER: My origin is CA - SFO to NV - LAS.

ASSISTANT: Is there any other specifications to be met?

USER: Make sure that my price limit is 1000 with one connection.

ASSISTANT: Ok, please stand by. I will check and revert to you.

USER: Sure.

ASSISTANT: I am glad to inform you that, I found a Spirit airline with single connection matching your requirements.

USER: May I know the flight number?

ASSISTANT: Flight number is 1004. Shall I proceed with this booking?

USER: Ok, you can proceed with my booking.

ASSISTANT: Your flight has been booked successfully with the fare of 100.

USER: Thanks for your service.

ASSISTANT: Thanks for opting us, have a great day.

USER: Thank you.