You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Karen Garcia here.

ASSISTANT: How may I assist you?

USER: Due to sudden change in my meeting to another dates I would like to change my reservation. Can you please help me out?

ASSISTANT: Sure, I am here to help you. Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation under your name.

USER: It's alright, no problem, I think the ticket was not booked properly while I am booking. Anyways, thank you for the information.

ASSISTANT: Ok fine. Thank you for reaching us.