You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I need you to make few changes in my recent booking. Please help me.

ASSISTANT: Sure, we are here to help you. Can I have your name to proceed further?

USER: Thank you. My name is Jennifer Campbell.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Thank you for your time, sorry no reservation found on your name.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.