You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you now?

USER: I want to change my recent reservation, Can you please help me in that?

ASSISTANT: Yes, I will definitely try my best to help you in changing your reservation.

USER: Thank you.

ASSISTANT: Can you please forward me your good name to check your reservation status?

USER: My name is Rebecca Harris.

ASSISTANT: Ok, please wait for a while. I will check your reservation status and get back to you.

USER: Sure.

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

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for opting us.