You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I aid you today?

USER: Owing to an emergency I need to change an existing reservation. Can you help me?

ASSISTANT: Sure, we are glad to assist you.

USER: I am Cynthia Carter.

ASSISTANT: Wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting,. Sorry to notify you that there is no reservation found on your name in our database.

USER: Ok, not an issue.

ASSISTANT: Thank you for opting us.

USER: Thanks for your information.