You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I help you today? May I know your name?

USER: I want to change my existing reservation as my sports event is postponed. Please check the reservation list on my name Jennifer Robriguez.

ASSISTANT: Ok, Please wait a minute,.

USER: Sure.

ASSISTANT: Thanks for waiting. There is no flight found with your name.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us.

USER: Thank you for your service.