You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephanie Lewis.

ASSISTANT: How may I help you for today?

USER: I want to cancel my reservation, please help in that?

ASSISTANT: Sure, please give me a moment to check your details.

USER: Sure.

ASSISTANT: I have found your reservation in my records, shall I proceed to cancel the reservation?

USER: Yes, please proceed.

ASSISTANT: Your reservation is successfully completed.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.