You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Can you help me to change my reservation?

ASSISTANT: Sure, I will help you. Can I have your name?

USER: Sure, my name is Michelle Phillips.

ASSISTANT: Please, wait a minute.

USER: Sure.

ASSISTANT: I am sorry, there is no reservation found on your name.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for approaching us.