You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Will you please help me in changing an existing reservation, as my holiday trip got postponed?

ASSISTANT: Ok, To check your reservation I need your name.

USER: Edward Brown is my name.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: We found that there is no reservation available with your name.

USER: Ok, thank you for the informaion.

ASSISTANT: Thank you for consulting us.