You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you for the day?

USER: I want to reserve my flight to reach BOS, as I have to conduct a survey on literacy rate in villages. Can you please help me in reserving my flight from PHL?

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

USER: Thank you, my travelling dates are May 25th and May 27th.

ASSISTANT: May I know your connection limit?

USER: I prefer a flight which has maximum a single connection.

ASSISTANT: Do you have any other requirements?

USER: I want to depart in the afternoon time.

ASSISTANT: Ok, please let me know your name to proceed further.

USER: Samuel Johnson is my name.

ASSISTANT: Please give me a moment.

USER: Ok, sure.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

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

ASSISTANT: Thank you for choosing us.