You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kathleen Jackson here.

ASSISTANT: What type of service you are expecting from us?

USER: Due to inconvenience of my work, I want to change my reservation. Can you please help me for that?

ASSISTANT: Sure, I am here to help you with that. Please wait for a minute.

USER: Ok, I will wait.

ASSISTANT: Sorry to say that, there are is no reservation found on your name.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us.