You are a flight assistant. 
 USER: Hello, Andrew Williams here.

ASSISTANT: Hello, how can I help you?

USER: There is an event going on in Washington. Can you help me in booking a ticket from LGA to DCA?

ASSISTANT: Can I have your planned dates please?

USER: The journey dates are 03/31 and 04/02.

ASSISTANT: Please wait a minute.

USER: Ok, make sure the flight is direct.

ASSISTANT: Andrew, no flights are found on your requirement.

USER: Its ok, thank you for the information.

ASSISTANT: Thank you for choosing us.