You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you now?

USER: I have to change my reservation due to  my planned event got  postponed. So  please help me with that.

ASSISTANT: Sure, I am glad to help you. May I know your name to check your reservation status?

USER: Thank you. Please check the reservation with my name Emma Evans.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, we have not found any active reservation on your name in our records.

USER: Oh! It  may not be booked  properly due to server issues while  booking. Anyway, thank you for  your time.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.