You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: Can you help me in changing my recent reservation?

ASSISTANT: Sure, may I know your name?

USER: I am Emma Collins.

ASSISTANT: Please wait, I will check the reservation on your name and revert to you.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: No issue, thank you.

ASSISTANT: Thank you for approaching us.