You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Benjamin Gonzalez here.

ASSISTANT: Gonzalez, how may I help you?

USER: Can you cancel my flight ticket reservation? As my press conference is been postponed to some other date in Chicago.

ASSISTANT: Sure, please give me a moment to check your ticket status.

USER: Ok.

ASSISTANT: Sorry, no reservation is available by your name.

USER: Thank you.

ASSISTANT: Thank you for reaching us.