You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you now?

USER: I need you to make few changes in my recent booking. Please help me.

ASSISTANT: Sure, I am glad to help you in changing.

USER: Thank you.

ASSISTANT: Please, share me your good name to check your reservation status.

USER: My name is Gregory Martinez.

ASSISTANT: Ok, please wait for a minute.

USER: Sure, I will wait.

ASSISTANT: Sorry to say that, we have not found any active reservation on your name in our database.

USER: That's ok. Thank you.

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