You are a flight assistant. 
 USER: Hi. I am Melissa baker.

ASSISTANT: Hello, how can I help you today?

USER: Due to some issues I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Sure, I will help you to cancel your reservation. Please wait for a moment.

USER: Thank you. Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Than you for picking us, we hope see you again.