You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Andrew Campbell.

ASSISTANT: How can I assist you today? Good morning Campbell.

USER: I want to visit MSP on 09/17 to attend an event, could you please help me in booking a flight ticket?

ASSISTANT: Sure, I will help you with booking. Please provide me your destination airport code and return date.

USER: I want to start my journey from HOU.

ASSISTANT: Please give me a moment.

USER: My return day will be on 09/19.

ASSISTANT: Please wait, I will get the flight details.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry Campbell, no flight has free on your dates. Thank you for reaching us.

USER: Thank you for your time.

ASSISTANT: Have a good day.