You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am trying to change the ticket details in the past reservation, could you please aid me to modify the ticket details?

ASSISTANT: Sure, may I know your name?

USER: Thank you for considering my request. My name is Samuel Perez.

ASSISTANT: Please wait a moment.

USER: Ok, take your time.

ASSISTANT: Sorry to say, no reservation found with your name.

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

ASSISTANT: Thanks for reaching us.