You are a flight assistant. 
 USER: Hi, I am Jason Anderson.

ASSISTANT: Hello, how can I support you today?

USER: Owing to an emergency, my planned trip to Navajo adventure with friends got postponed. So I want you to change my existing reservation.

ASSISTANT: Sure, I will help you with that. Please wait for a moment, while I check for the reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name.

USER: Ok, not an issue. Thank you for your help.

ASSISTANT: Thank you for reaching us, we hope see you again.