You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am George Parker, can you help me to change my reservation to next week?

ASSISTANT: I will help you with that, please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found under your name to change it.

USER: Ok, no issues.

ASSISTANT: Thanks for reaching us.

USER: Thank you for your help.