You are a flight assistant. 
 USER: Hello, I am Matthew Lewis.

ASSISTANT: Hello, how may I support you?

USER: I want to book a flight ticket to attend a live concert which is held on 06/01 and return on 06/03, can you please book me a flight ticket?

ASSISTANT: Sure, do you have any price limit?

USER: Yes, I need a ticket with price under 200.

ASSISTANT: Help me with the source and destination codes.

USER: Sure, I have planned to travel from AZ-PHX to PA-PHL.

ASSISTANT: Ok, hang on for a moment I will check the availability of flights and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, we are pleased to inform you that we have found a Southwest airline, flight number-1019, connections-1 and price limit is 200. Shall I proceed to book?

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.