You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jessica Perez here. Can you change my flight ticket reservation?

ASSISTANT: In which way I can aid you at this moment? Sure, I will help you with that. Please hold on a moment.

USER: Sure.

ASSISTANT: There is no previous reservation available under your name.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for contacting us Jessica Perez.