You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I want to change my existing reservation, can you please help me with this?

ASSISTANT: Sure, kindly mention your name.

USER: I am Virginia Hernandez.

ASSISTANT: Reservation found. Please share your trip dates.

USER: I prefer to travel on Jan 6 and Jan 8.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are SEA and MCO.

ASSISTANT: Do you need any connection limit?

USER: I would like to travel in a connecting flight.

ASSISTANT: If you have any other specifications, let me know?

USER: No.

ASSISTANT: Ok, please wait a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights available in your routes.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.