You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: How can I book a flight ticket for my friend on the name Ashley Baker for the dates June 25 and June 27?

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: Ok, please book my ticket from my nearest airport CO - DEN and destination airport code is PA - PHL?

ASSISTANT: Do you prefer any halt in between journey?

USER: Yes, please book a connecting flight.

ASSISTANT: We are pleased to inform you that we have found a JetBlue airline, flight number-1016 connections-1 and price limit is 100.

USER: Can you check and let me know if it is business class flight or no?

ASSISTANT: It's an economy class, shall I check for business class?

USER: Yes, please check.

ASSISTANT: Sorry to say, there are no flights found under your preferable class.

USER: That is ok, thank you for assisting me.

ASSISTANT: Your welcome.