You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I need to cancel my recent reservation due to my scheduled examination dates has been postponed. Can you please help me in that one?

ASSISTANT: Sure, I am here to help you with the ticket cancellation.  Can you please provide me the name with which you have reserved your previous ticket?

USER: Thank you and I have booked the flight ticket on my name Emily Evans.

ASSISTANT: Ok, please wait a minute while I am checking your ticket status.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to inform you, there is no reservation found with your name in our database to cancel.

USER: Ok, that's fine. Thank you for your help.

ASSISTANT: You are welcome. Thank you for reaching us. Have a nice day.

USER: Most welcome.