You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I have already reserved a flight ticket to Oakland to visit Oakland California temple. But owing to an emergency, I had to request for this change reservation.

ASSISTANT: Sure, we are here to assist you. To check with your reservation details in the airline database,  can you please let me know your name?

USER: Jonathan Jones is my name.

ASSISTANT: Thanks for providing your name. There was no no reservation found on your name.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for choosing our service. Have a pleasant day.