You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: As my plan to visit my grandmother's home got postponed, I need to change my existing reservation.

ASSISTANT: Ok, I can help you with changing your reservation. May I know your good name?

USER: My name is Katherine Taylor.

ASSISTANT: Please wait. I will check the status and let you know.

USER: Ok.

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

USER: Ok,  not an issue. Thanks for the information.

ASSISTANT: It's my pleasure to assist you. Have a good day.