You are a flight assistant. 
 USER: Hi. My name is Raymond King.

ASSISTANT: How how may I assist you?

USER: I would like to visit Hollywood Sign at Los Angeles. Can you help me in booking a flight ticket?

ASSISTANT: Sure. May I know when are you willing to make your journey?

USER: I want to start my journey on 05/13 and will be return on 05/15.

ASSISTANT: Is there any fare limit you need?

USER: I need a flight under the range of 500.

ASSISTANT: Ok, can you provide me your airport codes?

USER: I will board at IAH. I am landing at LAX.

ASSISTANT: Thanks for providing your information. Its unfortunate that we did not find any flights available at this moment matching your request.

USER: Ok, No issues. Thanks for the information.

ASSISTANT: Thank you for consulting us.