You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I aid you?

USER: Please book a ticket from Washington, DC-DCA to Minneapolis & St. Paul, MN-MSP.

ASSISTANT: Sure, when are you planning to travel?

USER: Travelling dates are from 03/09 to 03/11.

ASSISTANT: May I know your name?

USER: My name is Alexander Martinez.

ASSISTANT: We found a direct flight.

USER: Please do not book flight. Thanks.