You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Laura Jones.

ASSISTANT: How may I assist you?

USER: I need to change my existing reservation as my exams got postponed, Can you please help me with that?

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

USER: Sure.

ASSISTANT: Thanks for your time, there is no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thanks for your information.