You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Richard Jones. I want to change my ticket reservation that when I am booking a ticket it show with a two connecting flight but now it got emergency and I need a connecting flight to travel, so can you please help me in changing my recent ticket booking?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Sure, take your own time.

ASSISTANT: Richard, there is no reservation found under your name.

USER: That's fine. Thank you for your help.

ASSISTANT: Thank you for contacting us.