You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Betty Lewis, can you help me to cancel my reservation which I did recently?

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

USER: Ok, I will wait for your response.

ASSISTANT: Sorry Lewis, no reservation is available by your name.

USER: Ok, not a problem I will check my mails to know more about my reservation. Thank you for your help in providing the information.

ASSISTANT: Thank you for choosing us.