You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Can you please change my recent reservation? As my planned trip has been postponed to some other dates.

ASSISTANT: Sure, can you share me your good name to proceed further?

USER: Sure, my name is Christopher Gonzalez. Sure, my name is Christopher Gonzalez.

ASSISTANT:  I am very sorry to inform you that there is no reservation found under your name in our database.

USER: Oh! That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for reaching us.