You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I be a help for you?

USER: I am Stephanie King. I am planning to change my reservation, can you help in that?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name in our database to change.

USER: That's ok.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your help.