You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Jeffrey Davis from New York city. I need to change my reservation due to my planned event got postponed.  So please help me with that.

ASSISTANT: Sure, I am here to help you in that.

USER: Thank you.

ASSISTANT: Please give me a moment to check your reservation status.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found 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 approaching us.

USER: Most welcome.