You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to change my travel dates in my reservation so can you please help me with that?

ASSISTANT: Sure, please provide your name to fetch your ticket from our database.

USER: Thank you for your response, my name is Rebecca Wright.

ASSISTANT: We regret to inform you that there is no active reservation found on your name.

USER: Oh! It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us.