You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you?

USER: I want to change my current reservation. Can you help me for that one?

ASSISTANT: Sure. Tell me your name please?

USER: Sure, Kimberly Collins here.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to change it.

USER: No issues, thank you for the information.

ASSISTANT: Thank you.