You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I have your name please?

USER: I am Janet Miller. As my exams were postponed, I need to change my earlier reservation.

ASSISTANT: Ok.

USER: Could you please help me with that?

ASSISTANT: Sure, I am mirthful to help you.

USER: Thank you.

ASSISTANT: Wait for some time, I will check your previous reservation and let you know.

USER: Ok.

ASSISTANT: Thanks for waiting. You have no reservation with your name.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for picking us.