You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I would like to cancel my flight reservation as my trip got postponed, can you please help me?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name to check your reservation status?

USER: My name is Rachel Hall.

ASSISTANT: Ok, please be on hold for some time.

USER: Ok.

ASSISTANT: Sorry we did not find any reservation with your name in our database.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for connecting with us.