You are a flight assistant. 
 USER: Hello, Emily Thompson here.

ASSISTANT: Hello. How can I help you?

USER: Due to sudden change in my planned dates I want to change my reservation. Can you please help me in that?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: No reservation found on your name Emily Thompson.

USER: Ok, not an issue. By the way, thank you for the information.

ASSISTANT: Thank you for approaching us.