You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Myself Samantha Rodriguez.

ASSISTANT: Ok.

USER: Can you please book a flight ticket from DCA to PHL locations?

ASSISTANT: Sure, may I know your travel dates please?

USER: My travelling dates are from 05/17 and 05/19. Make sure that I want a direct flight.

ASSISTANT: Sorry to inform you that there are no flights available for you. Thank you for choosing us.

USER: It's ok. Thank you for the information.