You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Actually my IELTS conference is postponed, so that I want to cancel my recent reservation. Can you help me?

ASSISTANT: Sure, I am happy to help you. Can you please mention your name to check the reservation?

USER: Sure, I am Sandra Taylor here.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Sorry to inform you, I didn't found any reservation with your name to cancel.

USER: Ok, no problem, I will check any other way.

ASSISTANT: Ok. Thank you for contacting us.

USER: Thank you for your information.

ASSISTANT: You are welcome. Have a nice day.