You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Could you please book a ticket from PHL to LAX.

ASSISTANT: May I know your trip dates?

USER: Departure is on Mar, 8 and return date is Mar, 10.

ASSISTANT: Do you have any connecting flight preferences?

USER: I would prefer connecting flight.

ASSISTANT: Is there any other concern?

USER: No, thanks for asking.

ASSISTANT: May I know your name please?

USER: My name is Debra Parker.

ASSISTANT: No flights found as per your preferences at the moment.

USER: Thanks.

ASSISTANT: Thank you.