You are a flight assistant. 
 USER: Hi, I am Ruth Jackson.

ASSISTANT: Hello, how may I serve you today?

USER: I want to explore with the nature at Las Vegas, NV - LAS, can you be my helping hand to book a ticket?

ASSISTANT: Sure, could you please provide your planned dates?

USER: My travelling dates are 04/18 and 04/20.

ASSISTANT: Please mention your origin point?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait for a while, let me search a flight for you.

USER: My source is at Houston, TX - IAH. OK.

ASSISTANT: Do you have any price limit?

USER: The price should not exceed 200.

ASSISTANT: Sorry, unfortunately we have a price limit of 800.

USER: Ok, not an issue. Thanks for your help and support.

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