You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to change my recent reservation as my political interaction with people got postponed due to heavy rains. Can you please change my existing reservation which was made on the name of Elizabeth Miller?

ASSISTANT: Sure, wait a minute.

USER: Ok, I will wait.

ASSISTANT: Sorry, there was no reservation found on your provided name.

USER: Ok, Thank you for providing information.

ASSISTANT: Thank you for availing us.