You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Myself Amy Wright, my planned trip to visit my friends for a party in Phoenix got postponed, So I want to change my existing reservation. Could you help me in changing my existing reservation.

ASSISTANT: Sure, we are here to help you. Wait a while.

USER: Ok.

ASSISTANT: Thank you for your valuable time. No reservation found with your name.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your valuable information.

ASSISTANT: Have a nice day.