You are a flight assistant. 
 USER: Hello,. I am Charles Hall.

ASSISTANT: Hello, how may I help you today?

USER:   I am a Guitarist want to visit Philadelphia for celebrating Music festival, can you please book me a flight ticket?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: Source is from IAH and destination is to PHL.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I want to travel on 12/04, and need to catch return flight on 12/06.

ASSISTANT: Is there any fare preference?

USER: Price limit is 5000.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: An airline Southwest of flight number 1016 having a halt with fare 100 is available. Shall I proceed to book?

USER: Proceed with the booking.

ASSISTANT: Your booking has been confirmed.

USER: Thanks for the assistance.

ASSISTANT: Thank you for connecting with us.