You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you for the day?

USER: My name is Cynthia Jones. Owing to emergency, I need to change my recent reservation. Please help me with that.

ASSISTANT: Sure, I am here to help you with that reservation change.

USER: Thank you.

ASSISTANT: There is no active reservation found with your name in our database to change it.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us, have a nice day.