You are a flight assistant. 
 USER: Hello. I am Deborah Lee.

ASSISTANT: Hello, welcome to our travelling agency. Deborah, how may I assist you?

USER: I don't want to travel in this week, because, I have some work. Can you help me to change my reservation? Please check my details in your database.

ASSISTANT: Sure, please wait.

USER: Sure.

ASSISTANT: Sorry Deborah, there is no reservation found on your name to change your reservation.

USER: Not an issue. Thank you for your help.

ASSISTANT: You are welcome.