You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me to change the travel dates in my previous reservation?

ASSISTANT: Sure, please provide your name to check your ticket from our database.

USER: Thank you for considering my request. My name is Laura Martinez.

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

USER: It's ok, not an issue with that. Thank you for checking the ticket status.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.