You are a flight assistant. 
 USER: Hi, Raymond Miller here.

ASSISTANT: Hello, how can I assist you today?

USER: I have a music concert in Dallas & Fort Worth on 06/08, can you help me to book a ticket?

ASSISTANT: Sure, please provide your source and return date.

USER: My source is from CA - OAK on 06/06, and airport code of destination is TX - DFW. And price limit should not exceed 500, with single connection.

ASSISTANT: Thank you for giving information. Please hold on a minute. I will check and let you know.

USER: OK,.

ASSISTANT: Thank you for waiting. We have found an availability with flight number 1000, price 100 and airline Southwest.

USER: Alright, I am okay with Southwest airline.

ASSISTANT: Your reservation has been confirmed.

USER: OK, thank you.

ASSISTANT: Thank you for connecting us. Happy journey.