You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Yes, definitely. May I know your good name please?

USER: Sure, my name is Rebecca Evans.

ASSISTANT: Please wait for a while because I need to check your existing reservation details to do modification in that.

USER: Ok.

ASSISTANT: Evans, there is no reservation found under your name in our records.

USER: Ok fine, thank you for the information.

ASSISTANT: Welcome, thank you for choosing us.