You are a flight assistant. 
 USER: Hello, I am Donald Williams.

ASSISTANT: Hello, how can I help you today?

USER: Due to sudden work, I need to change my reservation. Can you please help me with it?

ASSISTANT: Sure, please wait for a while.

USER: OK.

ASSISTANT: Thanks for waiting, we found a reservation on your name, please help me with your new reservation details?

USER: My new journey details are from OAK to LGA. My travelling dates will be on 04/30 to 05/02. I need a connecting flight.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Ok, flight- 1026, airline- Frontier, price- 300 with connection matches your requested details.

USER: You can proceed to booking.

ASSISTANT: Ok, your ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for opting us.