You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Could you help me in booking a flight ticket from LGA to DCA?

ASSISTANT: Sure, may I know your travel dates?

USER: I will start on May 11, return on May 13.

ASSISTANT: Please share me your name.

USER: My name is Matthew Gonzalez.

ASSISTANT: Do you have any specifications?

USER: I want direct flight. And I need a economy class flight ticket.

ASSISTANT: Sorry, there is no direct flight.

USER: No problem, thank you.

ASSISTANT: Thank you.