You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be your helping hand?

USER: I am Kenneth Scott want to assist my professor in his conference at MA-BOS. Can you book  a ticket from PA-PHL?

ASSISTANT: Sure, can I know your travelling dates?

USER:  My travel dates are 04/014 and 04/06.

ASSISTANT: Please wait a minute.

USER:  Ok.

ASSISTANT: Currently, there are no flights on your preferred dates.

USER: Thank you for your response.

ASSISTANT: Thank you.