You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you?

USER: I am Margaret Allen, can you help me to cancel my reservation?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Ok, please take your time to check.

ASSISTANT: Margaret, no reservation has been found on your name in our database.

USER: Ok, thank you for the information. I will check with my mails to know more.

ASSISTANT: Thank you for approaching us.