You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I serve you?

USER: Please cancel my recent reservation.

ASSISTANT: Sure. Can I know your name?

USER: I am Melissa Smith.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Thanks for your time. We didn't found any reservation by this name.

USER: Thank you.

ASSISTANT: Thank you for pickling us.