You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Could you please help me to change my reservation? As I got some urgent work at my office.

ASSISTANT: Sure, may I know your name?

USER: My name is Pamela King.

ASSISTANT: Please wait for a moment to check your ticket status.

USER: Sure.

ASSISTANT: Sorry, no reservation is available by your name.

USER: No problem, anyway thank you very much for checking.

ASSISTANT: Thank you for approaching us.