You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Owing to an emergency I had to request for this change reservation, Can you please help me in that?

ASSISTANT: Sure, I am oblige to help you with that.

USER: Thank you for taking my request into consideration.

ASSISTANT: Please provide your name to check your previous reservation status.

USER: My name is Michael Edwards.

ASSISTANT: Wait a moment to check.

USER: Sure.

ASSISTANT: We regret to inform you that, there is no reservation available on your name in our records.

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

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