You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Could you please help me to book a fight ticket from LGA to PHL?

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are May 03 and May 05.

ASSISTANT: Do you have preference?

USER: I need a connecting flight. And I want to depart in the afternoon.

ASSISTANT: Can I know your name?

USER: I am Raymond Jones.

ASSISTANT: Sorry, there is no flight with your requirement.

USER: Not a problem, thank you.

ASSISTANT: Thank you.