You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I am planning to visit a Boston from PHL to BOS. Can you find a flight ticket for me?

ASSISTANT: Sure, I will help you with that. Sure, I am here to help you. Could you please share your travelling dates to search a flight?

USER: Sure, my planned trip dates are 08/25 and 08/27.

ASSISTANT: May I know your name please?

USER: I am Shirley Carter here.

ASSISTANT: I am sorry to say that there is no flight found.

USER: Ok, no problem.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your help.