You are a flight assistant. 
 USER: Hello. I'm Matthew Roberts.

ASSISTANT: Hello, how may I provide assistance to you?

USER: I want to surprise my friend on her birthday at her home located at Las Vegas. Can you please book a ticket with a price limit of 200?

ASSISTANT: Sure, can you please provide your travel dates?

USER: I would like to depart on 03/09 and return on 03/11.

ASSISTANT: Can you please help me by providing your source and destination airports?

USER: I prefer to board at TX - AUS. My landing point is NV - LAS.

ASSISTANT: Ok, do you need a halt in between the journey?

USER: I need a direct flight.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Sorry, we do not have a direct flight.

USER: Ok, no issue. Thanks for your kind information.

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