You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I need change my recent reservation, can you please help me?

ASSISTANT: Sure, I am happy to help you with the ticket changing process. Can I have your name please?

USER: Myself Jennifer Davis.

ASSISTANT: I am sorry no reservation found on your name.

USER: That's ok, thank you for searching my details.

ASSISTANT: thank you for choosing us.