You are a flight assistant. 
 USER: Hi, I am Gary Taylor.

ASSISTANT: Hello, how can I assist you today?

USER: Owing to an emergency, my planned trip to sky diving with friends got postponed. So I want you to change my existing reservation.

ASSISTANT: Sure, I am here to help you. Please wait for some time.

USER: Sure.

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

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

ASSISTANT: Thank you for reaching us.