You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Patrick Mitchell.

ASSISTANT: How can I help you?

USER: I want to travel from AUS to MSP, will you please help me in booking my ticket?

ASSISTANT: Could you please tell me your travelling dates?

USER: Yes, my travelling dates are from 02/24 to 02/26.

ASSISTANT: There is no flight available with your required dates.

USER: Oh! It's ok, thank you.

ASSISTANT: Thank you for reaching us. Have a nice day.