You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am John Gonzalez.

ASSISTANT: How can I assist you today?

USER: I am planning to visit cathedral basilica of saint peter and Paul in the Philadelphia, PHL. Can you help me to book a connecting flight?

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

USER: My travel dates are July 29 and 31.

ASSISTANT: Could you please help me with the source airport code?

USER: My source is from San Francisco, SFO.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other connection that you are looking for?

USER: Yes, I need a connecting flight.

ASSISTANT: Is there any other requirement that you are looking for?

USER: No. I want to return in the evening time.

ASSISTANT: John Gonzalez, there is a flight available with price 200 and the connection is 1 with Spirit airline. Would you like me to proceed with the booking?

USER: Please proceed.

ASSISTANT: Your booking is confirmed with 1024 flight number.

USER: Thank you for helping me with your service.

ASSISTANT: You are welcome. Thank you for reaching us.