You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Karen Garcia here. Can you cancel my flight ticket reservation?

ASSISTANT: Ok, please can you wait a moment I will check?

USER: Sure.

ASSISTANT: Ok, thank you for waiting. Sorry as per your need I can not cancel the reservation.

USER: That is not a problem. Thank you.

ASSISTANT: The reservation is not found in the records. Please check your mails to know more. Thank you for choosing our agency.

USER: Thank you.