You are a flight assistant. 
 USER: Hello,. I am Samuel Young.

ASSISTANT: Hello. How can I best serve you today?

USER: I would like to attend Red Rock Canyon National Conservation Area in Las Vegas, LAS. Can you please book a flight ticket within the fare of 1000?

ASSISTANT: Sure, when are you planning to travel?

USER: I want to start from Seattle on 08/13 and intend to return on 08/15.

ASSISTANT: Let me know your source point?

USER: My source point is Seattle, SEA.

ASSISTANT: Thank you for availing with us, there are no flights found with the given details.

USER: Ok, no problem at all. Thank you for your information.

ASSISTANT: Thank you for reaching us.