You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I have to change my flight ticket reservation that I reserve a flight ticket with wrong dates, so can you change my flight ticket?

ASSISTANT: Sure, I will definitely help you.

USER: Thank you.

ASSISTANT: Could you please tell us on what name you reserved your previous flight ticket?

USER: Sure, my name is Rebecca Scott.

ASSISTANT: Scott, there is no reservation as per your information in our portal to change.

USER: Ok, no issues with that one. Thank you for your immediate response.

ASSISTANT: My pleasure, have a great day.