You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am James Martin, I planned to visit Boston to meet my cousin and spend some time with him. Can you book a connecting flight for me?

ASSISTANT: Sure, when are you willing to travel?

USER: I will travel on 01/27 and return on 29.

ASSISTANT: Please provide your airport codes?

USER: My source point is PA-PHL and destination is MA-BOS. I will return on 01/29.

ASSISTANT: Please give me a while. I will check and let you know.

USER: Sure.

ASSISTANT: Thanks for your time. Unfortunately there are no flights available with your requirements.

USER: Ok, thank you for the details.

ASSISTANT: Thank you for availing with us.