You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you today?

USER: I am Emma Taylor. I want to change my existing reservation, please help me out.

ASSISTANT: Sure, we are here to help you. Please wait for a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.