You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Could you please check the flight availability in economy class?

ASSISTANT: Sure, may I know your travel dates?

USER: I want to travel on Dec 05 and return on Dec 07.

ASSISTANT: Can you please share your airport codes?

USER: I am heading to PHX from PHL.

ASSISTANT: Do you have any specifications?

USER: I need a single connecting flight. And I want to depart in the afternoon.

ASSISTANT: May I know your name?

USER: My name is Stephen Allen.

ASSISTANT: We found an airline Frontier with flight 1015 having a fare 300 with stopover and depart time is 18:00 hours. Shall I proceed with booking?

USER: Yes, proceed.

ASSISTANT: Your booking has been processed.

USER: Thank you.

ASSISTANT: Thank you.