You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: My name is Rachel Edwards. I would like to change an existing reservation. Where my foot ball game got postponed.

ASSISTANT: Sure, I am here to help you. Sorry Rachel Edwards, no reservation is available by your name.

USER: No issue, thank you for the information.

ASSISTANT: Thank you for reaching us.