You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Emma Baker here, due to sudden work I want to change my reservation. Can you please help me with it?

ASSISTANT: Sure, please provide your name to check your existing reservation with us.

USER: I already mentioned above.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Emma Baker, we didn't find any reservation on your name to change.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.