You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Barbara Jones here.

ASSISTANT: How can I help you Jones?

USER: I have done a mistake, while booking a flight with wrong location. Can you help me to change my reservation?

ASSISTANT: Sure Barbara, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, that's not an issue. Thank you for your quick response.

ASSISTANT: Thank you for approaching us.