You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. Do you need any help from my side?

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

ASSISTANT: Sure, I will help you in changing, may I know your name please?

USER: My name is John Anderson.

ASSISTANT: John, I did not find any active reservation with your name in database.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.