You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: As my tournament got postponed, I want to change my existing reservation. Can you help me out?

ASSISTANT: Sure, I will help you with that. Can I know your name?

USER: Sure, my name is Sarah Wright.

ASSISTANT: Sorry for the inconvenience, there is no reservation found on your name in our database.

USER: Ok. No issues. Thank you for checking.

ASSISTANT: Thank you for opting us.