You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Pamela Miller.

ASSISTANT: How may I assist you?

USER: Due to some personal issues, I would like to change my existing reservation. Can you help me?

ASSISTANT: Sure, I will help you. Please hold on a moment.

USER: Sure, take your time.

ASSISTANT: Pamela, no reservation has been found on your name.

USER: Its ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us.