You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Karen Walker here.

ASSISTANT: How may I assist you?

USER: Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, I am here to help you with your concern.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check your reservation status and revert you.

USER: Sure, I will wait.

ASSISTANT: Karen Walker, I have found your reservation. Can I proceed to cancel?

USER: Please proceed.

ASSISTANT: Ok, your reservation has been cancelled successfully.

USER: Thank you.

ASSISTANT: Thank you for choosing us.