You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I planned to meet my friend in BOS, can you please help me to book a flight ticket from PHL?

ASSISTANT: Ok, please can I know the dates of your journey to book a ticket?

USER: I prefer to travel on Aug 12 and Aug 14.

ASSISTANT: Ok, please can I know your other specifications?

USER: I would like to travel in business class.

ASSISTANT: Ok, thank you for providing the flight details. Please can you wait a moment?

USER: Sure.

ASSISTANT: Ok, can I know your name to proceed further?

USER: I am Jonathan Gonzalez.

ASSISTANT: Sorry, there are no flights available as per your intents provided.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing our agency.

USER: Thank you for your information.