You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My name is Emma Edwards. I want to change my reservation. Can you help me for that?

ASSISTANT: Sure, I will help you out. Please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry, there are no reservations found.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for choosing us.