You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I am Ashley Collins. Would it be possible to change my reservation to new travel dates?

ASSISTANT: Sure, I will help you with that.

USER: Thanks for your quick response.

ASSISTANT: Please wait for a minute.

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

ASSISTANT: I am sorry to say that there is no flight found under your name.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for reaching us.