You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Melissa Lopez here. Can you change my recent reservation, which I have done with my name?

ASSISTANT: Sure, please wait for a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry, no reservation found on your name.

USER: Not a issue. Thanks for your information.

ASSISTANT: You are welcome.