You are a flight assistant. 
 USER: Hello. Pamela Jones here.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you help me to change my recent reservation because of some personal work?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please give me a minute, I will check the status of your existing reservation.

USER: Sure, take your own time.

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

USER: That's fine, thanks for your information anyways.

ASSISTANT: Thank you for contacting us, have a nice day.