You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Raymond Allen.

ASSISTANT: Is there anything specific that you would like me to help you with?

USER: Due to an earthquake, I want to change my existing reservation.

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: I am sorry to say that there is no reservation found.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for providing me with your details. Have a nice day.