You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jessica Williams.

ASSISTANT: How may I guide you today?

USER: Can you help me to change my reservation to another destination?

ASSISTANT: Sure, I will help you with that.

USER: OK.

ASSISTANT: Please wait a moment to check you previous reservation.

USER: Sure.

ASSISTANT: We regret to inform you that there is no reservation found on your name in our records.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us, have a great day.