You are a flight assistant. 
 USER: Hi, I am Brenda Jones.

ASSISTANT: Hello, how may I assist you today?

USER: Owing to an emergency, my meeting with client got postponed.

ASSISTANT: Ok.

USER: So I request you to change my existing reservation.

ASSISTANT: Sure, please hold on a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation found on your name.

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your support.