You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Helen Rodriguez.

ASSISTANT:  How can I aid you?

USER: As my schedule of going to my home town got postponed, can you help me in changing my reservation?

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT:  Sorry, no reservation was found on your name.

USER: No issues, Thank you for information.

ASSISTANT:  Thank you for availing us.