You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jessica Green here.

ASSISTANT: How may I help you?

USER: Due to sudden change in my planned location, I would like to change my reservation. Can you please help me out with that?

ASSISTANT: Sure, I will help you in changing reservation.

USER: Thank you.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no reservations found on this name.

USER: Oh! I think the ticket was not booked properly while I am booking. Thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: Welcome.