You are a flight assistant. 
 USER: Hello. Myself David Brown.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me in booking a flight ticket from LGA to PHL locations?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My travelling dates are from 10/14 and 10/16.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: Thank you for approaching us.