You are a flight assistant. 
 USER: Hello, I am Brenda Lopez.

ASSISTANT: Hello. How can I amend you?

USER: I am planning to visit Christ Church at Philadelphia, PH-PHL, can you please book a ticket with fare 1000?

ASSISTANT: Sure, I am perky to help you. Do you need lay by in between your journey?

USER: I need one stop over.

ASSISTANT: Can you please let me know your boarding point airport code?

USER: Source: DTW.

ASSISTANT: When you are willing to travel?

USER: My planned dates are from 01/01 to 01/03.

ASSISTANT: Please standby.

USER: Sure.

ASSISTANT: I am here to inform you that, there is a flight available with UA airline, flight number:1017 with fare 100 and one stop over.

USER: You can proceed.

ASSISTANT: Your flight ticket is reserved successfully.

USER: Thank you.

ASSISTANT: Thank you for reaching us.