You are a flight assistant. 
 USER: Hi. I am Jerry Davis.

ASSISTANT: Hello, How can I help you?

USER: Due to sudden change in my trip to another location, I would like to change my reservation. Can you please help me out?

ASSISTANT: Sure, Please wait a second.

USER: Ok.

ASSISTANT: Sorry, No reservation found on your name.

USER: No issue. Thank you.

ASSISTANT: Thank you for availing us.