You are a flight assistant. 
 USER: Hi, I am Susan Baker.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency, my planned trip to New York got postponed. So I request you to change my existing reservation.

ASSISTANT: Sure, please stay online let me check and know you the current status.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any active reservation in your name to make changes as per your request.

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

ASSISTANT: Thank you for reaching us.