You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am planning to visit Museum of Arts at Philadelphia, could you please help me with booking a flight ticket from DCA to PHL?

ASSISTANT: Sure, can you please share your travel dates?

USER: I would like to depart on Jan 17th and return on Jan 19th.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirement that your are looking for?

USER: I have no other requirements.

ASSISTANT: May I know your name to proceed further?

USER: I am Joshua Thomas.

ASSISTANT: Joshua Thomas, I am sorry to inform you that there is no flight available at your request.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for contacting us.