You are a flight assistant. 
 USER: Hi, I am Stephen Lee.

ASSISTANT: Hello, how may I assist you?

USER: I want to travel to Hidden Valley at Las Vegas, can you please book a flight ticket?

ASSISTANT: Sure, can you please provide me your travelling dates?

USER: My preferable travel dates are from 04/21 to 04/23.

ASSISTANT: Kindly, provide me your airport codes?

USER: My airport codes are from CA-SFO to NV-LAS.

ASSISTANT: Please be on hold.

USER: Ok.

ASSISTANT: Thank you for waiting, I found a flight with number 1000 and airline JetBlue. Shall I proceed?

USER: Yes, please proceed with booking.

ASSISTANT: Your flight ticket has been booked with single connection and fare of 200.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.