You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you at present?

USER: I want to change my recent reservation, can you please help me with that?

ASSISTANT: Surely, I will help you out.

USER: Thank you.

ASSISTANT: Can I have your name to trace your details?

USER: Nancy Thompson here.

ASSISTANT: Thanks for your name, please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, I have checked the reservation but we did not find any reservation on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for consulting us.