You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to meet my parents in Philadelphia. So please book my ticket from DFW to PHL.

ASSISTANT: May I know your trip dates?

USER: My itinerary dates are 02/29 and 03/02.

ASSISTANT: There is no flights available. May i know your name?

USER: My name is Rebecca Rodriguez.

ASSISTANT: Thank yo to approach us.