You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Nicole Davis.

ASSISTANT: How may I assist you?

USER: I want to change my reservation, can you help me with that?

ASSISTANT: Sure, I am here to help you with that. Can you please wait a minute?

USER: Sure.

ASSISTANT: Sorry for the inconvenience, there is no active reservation found  with your name to change the ticket details.

USER: Ok, no issues. Thank you.

ASSISTANT: You are most welcome. Thank you for choosing us.