You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Gregory Perez.

ASSISTANT: How may I help you?

USER: Can you please assist me in booking a ticket  to LAX from PHL?

ASSISTANT: Sure. Please provide travel dates, in order to book a ticket.

USER: My travel dates are from 08/18 to 08/20.

ASSISTANT: Please specify connections limit?

USER: I need a connecting flight.

ASSISTANT: No flight found with your requirement.

USER: OK, no problem thank you .

ASSISTANT: Thanks.