You are a flight assistant. 
 USER: Hi, I am Amy Gonzalez. Owing to an emergency, my badminton match got postponed.

ASSISTANT: Hello, in what way can I help you today?

USER: I request you to change my existing reservation.

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found with the given name.

USER: Ok, not an issue. Thank you for your assistance.

ASSISTANT: Thank you for opting us.