You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to attend my cousin's house.I want to book a ticket.

ASSISTANT: Could you please tell me your airport codes?

USER: My airport codes are TX-AUS to MN-MSP.

ASSISTANT: Could you please provide me your required dates?

USER: My trip dates are from 03/29 to 03/31.

ASSISTANT: May I know your name?

USER: Sure, my name is John Rodriguez.

ASSISTANT: There is no flight with your requirements.

USER: Ok, thank you.

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

USER: Thank you.