You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Actually my Business Trip got postponed, so that I want to cancel my recent reservation. Can you help me?

ASSISTANT: Sure, I will help you. Can you please tell me your name with which the ticket is booked so that I will check?

USER: Sure, the previous reservation is done under the name Nancy Brown.

ASSISTANT: Ok, please wait a moment.

USER: Ok, take your own time.

ASSISTANT: Sorry, there is no reservation with your name in our database.

USER: Ok, no problem,  thank you for your information.

ASSISTANT: You are welcome. Thank you for consulting us.