You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I be of your assistance?

USER: I want to change my existing reservation, which is done recently. Can you please help me out?

ASSISTANT: Sure, I'll help you in changing an existing reservation. May I know your name the heck the reservation status?

USER: Thank you for considering for considering my request. My name is Edwards Walker.

ASSISTANT: Thank you for providing your name, give me some time.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting. Sorry, there is no active reservation have been found under your name in our database to amend it.

USER: Ok, no problem.

ASSISTANT: Thank you for availing us.

USER: Thank you for giving the information.