You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I amend you today?

USER: Please change the reservation with the name of Jacob Johnson, as my trip has been postponed due to heavy rainfall.

ASSISTANT: Sure, we are here to help you to change it.

USER: Ok.

ASSISTANT: Please wait for a while, to check the present status of your name and revert to you.

USER: Sure.

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

USER: Not a issue. Thank you for aiding me.

ASSISTANT: Thank you for approaching us.