You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you today?

USER: As my cricket match got postponed, can you help me to change my existing reservation?

ASSISTANT: Sure, I will help you. To proceed further I need your good name please?

USER: Sure, my name is Brandon Jones.

ASSISTANT: There is no existing reservation found on your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for opting us.