You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be of your help?

USER: I am Virginia Gonzalez, I need a flight to Oakland to visit the Berkeley Botany Garden on 05/28. Help me to find a return ticket on 05/30.

ASSISTANT: Sure, please provide your codes of airport.

USER: My destination is CA-OAK and source airport code is TX-DFW.

ASSISTANT: Ok, do you prefer any connections in your journey?

USER: Yes, I want a flight with one connection.

ASSISTANT: Ok, Thank you for providing your essential details. We found a Spirit airline according to your requirements with flight number 1001 and price of 100.

USER: Please book me the flight 1001.

ASSISTANT: Ok, your booking has been confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you for consulting us and have a nice day.