You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Due to inconvenience of work, I want to change my reservation. Can you please help me for that?

ASSISTANT: Sure, will you mention the name for checking the reservation?

USER: My name is Scott Hall.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

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

ASSISTANT: Welcome, have a great day.