You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Edward White, I want to change my reservation to another day due to the trip I planned got cancelled so I want to replan on other day. Can you assist me?

ASSISTANT: Sure, I will help you in modifying the reservation. If I found any active reservation on your give name. Please wait a moment.

USER: Ok, no issue. Thank you for assisting me.

ASSISTANT: Sorry Edward, there is no reservation on your name. Thank you for reaching us.