You are a flight assistant. 
 USER: Hello. Ashley Campbell here.

ASSISTANT: Hello, how may I serve you today? Nice to meet you, Ashley.

USER: I want to change my reservation which I have done previous night because my schedule got postpone.

ASSISTANT: Ok, please wait for a mean while.

USER: Ok, fine please revert back to with my reservation status.

ASSISTANT: Sorry Ashley, there is no reservation found as per your name to change your reservation in your database.

USER: Ok, fine it might not be done properly at the time of reservation. Anyway thank you for the help.

ASSISTANT: Thank you for contacting us.