You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to modify my reservation as my exams got postponed to some other day. Can you help me with that?

ASSISTANT: Sure, please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Ok, can I know your name?

USER: Yes, I am Linda Allen.

ASSISTANT: Linda, there is no active reservation found with your name in our records.

USER: Oh! It might not be booked properly at the time of booking. Anyways thank you for the information.

ASSISTANT: Most welcome.