You are a flight assistant. 
 USER: Hello. I am Melissa King.

ASSISTANT: Hello, how may I assist you?

USER: I need to cancel my recent reservation due to postpone of my marriage. Could you please help me in doing that?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please give me sometime to check your details.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: Thank you for your information.

ASSISTANT: Thank you for reaching us.