You are a flight assistant. 
 USER: Hello, I am Elizabeth Campbell.

ASSISTANT: Hello, how may I aid you for the day?

USER: As I am a singer, I want to participate in Music festival at Las Vegas. Can you please help me for booking on 02/01?

ASSISTANT: Sure, can you please provide your journey points?

USER: My source is Houston, TX - IAH. My destination airport code is NV - LAS.

ASSISTANT: Please provide your arrival date.

USER: I intend to return on 02/03.

ASSISTANT: Do you have any specifications?

USER: I am looking for single connection. I can spend upto 500.

ASSISTANT: Ok, please for a while.

USER: Sure.

ASSISTANT: Sorry, there were no flights found from your source.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you for approaching us.