You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Benjamin Lopez here.

ASSISTANT: How may I assist you now?

USER: Can you change my flight ticket reservation?

ASSISTANT: Benjamin Lopez, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to inform you, there is no active reservation under your name.

USER: Not a problem.

ASSISTANT: Thank you for connecting with our services.

USER: Thank you.

ASSISTANT: Most welcome.