You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Pamela Martin.

ASSISTANT: How may I help you?

USER: I would like to change my reservation, could you help me out?

ASSISTANT: Sure, please give me a moment to check your ticket status.

USER: Sure, take your time.

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

USER: That's ok. Thank you, have a good day.

ASSISTANT: Thank you for reaching us.