You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Joseph Adams.

ASSISTANT: How may I assist you today?

USER: Could you please help me to cancel my recent reservation as my exams got post pone due to some technical issues.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please hold on, I will check in the reservation list.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name to cancel.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.