You are a flight assistant. 
 USER: Hello, I am Scott Campbell.

ASSISTANT: Hello, how may I render you today?

USER: I planned a trip earlier, but now I feel I cannot go right now, I want you to change the journey dates. Can you please help me?

ASSISTANT: Sure, I am here to help you.

USER: Thanks for accepting my request.

ASSISTANT: Please wait for couple of minutes.

USER: Sure.

ASSISTANT: Sorry, we didn't find any reservation on your name.

USER: Ok, not a big problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.