You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I be of your assistance today?

USER: Owing to an emergency, my FIFA tournament got postponed. So I want you to change my existing reservation.

ASSISTANT: Sure, I will help you with that. May I know on which name the ticket has been reserved?

USER: Sure, I have a recent reservation with name Christopher King.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you waiting, We hardly tried to find your reservation but, no reservation has been found with your name.

USER: Ok, not an issue. Thank you for your assistance.

ASSISTANT: Thank you for connecting with us.