You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Recently, I had reserve a flight ticket on my name to visit India which is one of the famous country to visit, but, due to emergency in my hospital I need to change my travelling dates . Can you help in changing my booking?

ASSISTANT: Sure, I will help you with that, firstly may I know your name?

USER: Nicholas Wilson this side.

ASSISTANT: Sorry to say, no reservation found on your name Mr.Nicholas Wilson.

USER: I think my ticket is no booked properly, even I did not get any confirmation message.

ASSISTANT: May be your right.

USER: No problem, thank you for your quick response.

ASSISTANT: Finally thanks for reaching us.