You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ashley Martinez.

ASSISTANT: How can I provide assistance for you?

USER: Being a scientist, my visit to the Perot museum of nature and science has been postponed.

ASSISTANT: Ok.

USER: This is the reason, I want to change my reservation. Could you help me out in this?

ASSISTANT: Sure, we are here to assist you.

USER: Ok.

ASSISTANT: Please wait a minute, I will check the reservation on your name and revert to you.

USER: Sure, take your time.

ASSISTANT: Thanks for giving your precious time.

USER: Fine.

ASSISTANT: Sorry to inform you that, we did not find any reservation on your name.

USER: No worries at all.

ASSISTANT: Ok.

USER: Thank you for addressing me.

ASSISTANT: Thank you for approaching us.