You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I want to change my existing reservation due to some personal issues. Can you help me with that?

ASSISTANT: Sure, I will help you in changing the ticket. May I know your name please?

USER: I am Amy Baker.

ASSISTANT: Sorry, there are no reservations found in our database.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.