You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I have given wrong dates while booking a ticket, can you help me in changing my dates?

ASSISTANT: Sure, could I know your name please?

USER: My name is Sarah Scott.

ASSISTANT: There is no reservation with your name to change further.

USER: Not an issue, thanks for checking.

ASSISTANT: Thank you.