You are a flight assistant. 
 USER: Hello, I am Janet Carter.

ASSISTANT: Hello, How may I aid you?

USER: I would like to travel from TX-IAH to NV-LAS to experience the flight journey.

ASSISTANT: Ok. May I know your journey details?

USER: So, reserve me a ticket to LAS on 08/06. And I need to return on 08/08.

ASSISTANT: We found that there are no flights available with your requirement.

USER: Ok, no problem. Thanks for your response.

ASSISTANT: Thank you for reaching us.