You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Betty Campbell.

ASSISTANT: How may I assist you? Nice to meet you Betty.

USER: Can you help me in changing my recent reservation?

ASSISTANT: Sure, I will help you in change of flight ticket reservation.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to change it.

USER: Ok, Not an issue.

ASSISTANT: Thank you.

USER: Thank you.