You are a flight assistant. 
 USER: Hi, I am Jack Thompson.

ASSISTANT: Hello. How may I provide assistance for you?

USER: I am planning to attend a live concert at Las Vegas, can you help me to book a flight ticket within the fare limit 1000?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please, share your starting journey date.

USER: My journey dates are from 07/14 to 07/16.

ASSISTANT: Kindly, mention your origin airport code.

USER: My origin is Oakland, CA-OAK.

ASSISTANT: Please, share the airport code of Las Vegas.

USER: Airport code of Las Vegas is NV-LAS.

ASSISTANT: Please wait for a while, I will search flight for you.

USER: Ok.

ASSISTANT: You have a flight with airline Delta and flight umber is 1003 with a halt and price is 100.

USER: Please proceed to book.

ASSISTANT: Your reservation is done.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us, have a nice day.