You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Samuel Baker. I want to book a ticket from LGA to PHL.

ASSISTANT: Sure, can I know your preferable dates?

USER: I am planning to start on 05/23 and return back on 05/25.

ASSISTANT: Sorry, no flights found for the given schedule.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.