You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you help me to book a flight ticket from BOS to PHL to meet my family?

ASSISTANT: Sure, may I know your travel dates?

USER: I will start on June, 13 and return back on June, 15.

ASSISTANT: Please share me your name.

USER: My name is Jacob Anderson.

ASSISTANT: Do you like connecting flight or direct flight?

USER: I am looking for a direct flight.

ASSISTANT: Do you have any specifications?

USER: I need to depart at afternoon time.

ASSISTANT: Sorry, there is no flight at this moment.

USER: It's ok, not an issue. Thank you.

ASSISTANT: Thank you.