You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: I want to change my recent reservation, Can you please help me in that?

ASSISTANT: Sure, can I have your good name please?

USER: My name is Emily Adams.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that no reservation has found under your name to change.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.