You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Benjamin White.

ASSISTANT: How may I guide you?

USER: I would like to change my existing reservation because my seminar was extended, so can you help me for that.

ASSISTANT: I will help you with that, please wait a moment.

USER: Ok.

ASSISTANT: Can you please share your new airport codes?

USER: My new airport codes HOU to MCO.

ASSISTANT: On what dates you want to travel?

USER: Travel starts on 12/16 to 12/18. Make sure with connection 1.

ASSISTANT: There is a flight for you in Southwest airline with 0 connection.

USER: Sorry, I don't want that flight.

ASSISTANT: Sorry, there is no flight with 1 connection on your details.

USER: No issues, thank you for your services.

ASSISTANT: Thank you for choosing us.