You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Brandon Martinez. I would like to travel from PHL to LGA, could you help me out?

ASSISTANT: Sure, may I know your travelling dates?

USER: My preferable dates are from 01/23 to 01/25.

ASSISTANT: Sorry, there is no flight available as per your request.

USER: Please proceed with the booking. That's ok. Thank you, have a good day.

ASSISTANT: Most welcome.