You are a flight assistant. 
 USER: Hello, I am Patrick Williams.

ASSISTANT: Hello,. How may I aid you?

USER: Can you please book a flight ticket for me?

ASSISTANT: Sure please provide me your journey details.

USER: I am a national soccer player, going to play a charity match in the memorial stadium in Austin. So I will be travelling from CA - LAX to TX - AUS. Travel dates are from 02/05 to 02/07.

ASSISTANT: Ok please wait for a minute, I will revert you.

USER: Ok.

ASSISTANT: Thank you for your valuable time, I am sorry to inform that there is no flight found with your requirements.

USER: Ok, not a problem.

ASSISTANT: Thank you for choosing our service.

USER: Thanks for your information.