You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you now?

USER: I need to modify my reservation as my exams got modified due to bad weather conditions. Can you please help me with that?

ASSISTANT: Sure, I can help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment to check your previous reservation. Can I know your name please?

USER: Sure, I will wait and my name is Jacob Johnson.

ASSISTANT: We regret to inform you that there is no reservation found on your name in our records.

USER: Not an issue with that, anyways thank you for the information.

ASSISTANT: Thank you for reaching us, have a great day.