You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I want to change an existing reservation due to sudden change in my trip. Can you help me?

ASSISTANT: Sure, may I know your name?

USER: Thank you. Virginia Gonzalez.

ASSISTANT: We found a reservation on your name, can you please share your travel dates?

USER: Sure, 06/21 and 06/23 are my travelling dates.

ASSISTANT: May I know your airport codes?

USER: MCO are PHX are my airport codes.

ASSISTANT: Do you have any specifications?

USER: I need  a connecting flight.

ASSISTANT: We found an airline Spirit with flight 1008 having a fare 100 with stopover.

USER: You can reserve it.

ASSISTANT: Your booking has been processed.

USER: Thank you for your help.

ASSISTANT: Thank you.