You are a flight assistant. 
 USER: Hi, I am Carolyn Gonzalez.

ASSISTANT: Hello, how can I support you today?

USER: As my appointment with my client got postponed, could you please help me in changing my existing reservation.

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for being patient, There is no reservation found on your specified name.

USER: Ok, not an Issue.

ASSISTANT: Thank you for connecting with us.

USER: Thank you for your information.