You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Paul Brown.

ASSISTANT: How may I provide assistance to you?

USER: I want to cancel my reservation due to my exams dates were postponed. Can you help me out?

ASSISTANT: Sure, I will help you. Please standby.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found with your name.

USER: Not an issue. Thank you for quick response.

ASSISTANT: Thank you for reaching us.