You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Melissa Green. Due to some issues, I just want to cancel my recent reservation.

ASSISTANT: Ok, I will do it for you.

USER: Ok.

ASSISTANT: But Melissa Green there are no reservations under your name.

USER: Thank you for quick response.

ASSISTANT: It's my pleasure.