You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am Brandon Wilson. I want to book a flight ticket from TX-IAH to NV-LAS. Can you help me?

ASSISTANT: Sure, may I know your depart and return dates?

USER: 08/28 and 08/30 are my travelling dates.

ASSISTANT: Ok, please hold on a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, no flights were found on your requested dates.

USER: No issue. Thank you.

ASSISTANT: Thank you for availing our services.