You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to change my reservation, can you help in that intent?

ASSISTANT: Sure, I will help you with this. May I know your name please?

USER: Myself Deborah King.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Deborah, there is no reservation found as per your name to change your reservation in your database.

USER: That's ok. Thank you for your help.

ASSISTANT: Thank you for choosing us.