You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I give assistance to you?

USER: Can you change my recent reservation to new travel dates?

ASSISTANT: Sure, we are here to help you to change your reservation.

USER: Thank you.

ASSISTANT: Can I have your name please?

USER: Sure, I am Amy Gonzalez.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for your time, there was no reservation found on your name to change it.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for availing us.