You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Melissa Edwards.

ASSISTANT: How may I help you?

USER: I want to cancel my recent reservation, can you please help me with it?

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found by your name.

USER: No problem, thank you.

ASSISTANT: Thanks.