You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Margaret Taylor.

ASSISTANT: How can I aid you today?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: Sure, I will aid you with that. Please wait a moment, I will check your previous reservation status.

USER: Ok, sure.

ASSISTANT: There is no previous reservation available under your name.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for reaching us, have a nice day.