You are a flight assistant. 
 USER: Hello. I am Jacob Lewis.

ASSISTANT: Hello, how may I help you?

USER: While checking my recent reservation status I mistakenly cancelled my reservation and again I need booking to PHL from LGA, could you mind help me in booking?

ASSISTANT: On which dates you are willing to travel?

USER: My trip dates are from 03/17 to 03/19. Please check direct flight.

ASSISTANT: Sorry, there is no flights available.

USER: It's ok, thank you for your help.

ASSISTANT: Most welcome.