You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I want to change my existing reservation due to miss place of our flight ticket by your agent. Can you help me?

ASSISTANT: Sure, may I know your name please?

USER: I am Jerry Wright.

ASSISTANT: Ok, please wait for some time.

USER: Sure.

ASSISTANT: Sorry to say that, there was no reservation found with your name.

USER: No issues. Thank you.

ASSISTANT: Thank you for opting us.