You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I need to change my recent reservation due to some issues, can you help me in doing that?

ASSISTANT: Sure, I will help you in changing your reservation.

USER: Thank you.

ASSISTANT: Can you please provide your name to check your reservation status?

USER: Sarah Turner here.

ASSISTANT: Sarah Turner, there is no active reservation found under your name in our database.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for contacting us.