You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: As the meeting with my manager got reschuduled due to an urgent work, I want you to change my reservation. Can you please help me?

ASSISTANT: Sure, please wait. I will check your reservation and revert to you. May I know your name?

USER: I am Rebecca Collins.

ASSISTANT: Ok, thank you. We did not find any reservation on your name.

USER: It's ok, no problem.

ASSISTANT: Thanks for reaching us, have a nice day.

USER: Thank you for the information.