You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Sure, can I know your name?

USER: Sure, my name is Stephanie Mitchell.

ASSISTANT: Sorry, there is no reservation available on the name Stephaine Mitchell.

USER: Ok, no problem, I will search any other way. Thank you for your information.

ASSISTANT: You are welcome.