You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Jonathan Phillips. I want to change my reservation due to heavy rainfall at my place. Can you help me?

ASSISTANT: Please allow me a moment to check it.

USER: Sure.

ASSISTANT: I have checked based on your request but it is showing that there is no reservation found for the user name in our data base.

USER: Ok, thank you.

ASSISTANT: You are most welcome and thank you for reaching us.