You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Right now I want to change my recent reservation due to some problem with venue. Can you help me?

ASSISTANT: Sure.

USER: Thanks.

ASSISTANT: Give me a minute.

USER: Deborah Collins is my name, please check on this name.

ASSISTANT: OK. Sorry we couldn't find any reservation on your name.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you.