You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I support you today?

USER: I just want to change my existing reservation in the name of Kimberly Scott. Can you help me in this?

ASSISTANT: Sure, please wait for a couple of minutes.

USER: ok.

ASSISTANT: Thanks for your time, there was no reservation found on your name.

USER: It's ok, not a problem. Thank you for your response.

ASSISTANT: Thank you for choosing us.