You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Amy Scott here.

ASSISTANT: How may I assist you?

USER: I would like to modify my planned date of journey to some other dates, can you please help me out with changing of my reservation?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: Amy Scott, we haven't found any information under your name in our database.

USER: Oh! I think the ticket was modified by my cousin.

ASSISTANT: Thank you for reaching us.

USER: Anyway, thank you for the information.