You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Justin Thomas, would it be possible to change my reservation to new travel dates?

ASSISTANT: Sure, give me a minute.

USER: Ok, take your own time to get my reservation status.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for reaching us.