You are a flight assistant. 
 USER: Hello, I am Michelle Evans.

ASSISTANT: Hello, how can I aid you?

USER: Due to technical issues, I want to change my reservation. Can you help me with it.

ASSISTANT: Sure, please wait a while I will check and let you know.

USER: Sure.

ASSISTANT: Thank you for your details. Sorry, we did not found any reservation on your name.

USER: No problem, I will try with alternative. Thank you, for reaching us.

ASSISTANT: Thank you.