You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Cynthia Evans.

ASSISTANT: How can I aid you at this moment?

USER: Can you help me to change my reservation to next week?

ASSISTANT: Sure, I will help you with that.

USER: Ok.

ASSISTANT: Please hold on a moment, I will check your reservation status. Thanks for waiting. There is no previous reservation available in your name Cynthia Evans.

USER: That is fine. Thank you for your time.

ASSISTANT: Thank you for reaching us, have a nice day.