You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Samuel Hill here.

ASSISTANT: How may I help you?

USER: I was made a wrong reservation earlier in this week. So I want to change my reservation. Can you please help me for that?

ASSISTANT: Sure, I will help you in changing your reservation. Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there are no reservations found on this name.

USER: Thank you for the information.

ASSISTANT: Thank you for reaching us.