You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How may I render you today?

USER: I want to cancel my recent reservation due to postpone of my exams.

ASSISTANT: Sure, I'll help you in cancellation.

USER: Thank you.

ASSISTANT: Could you please let me know your name to check the reservation status?

USER: Sure, Justin Turner here.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform you we did not find any reservation by your name.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your help.