You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amy Collins.

ASSISTANT: Welcome to our agency Collins. Tell me in what way may I contribute my time in serving you?

USER: I would like to change my existing flight reservation that has been booked earlier this week as my secretary had by mistakenly reserved the ticket to Boston instead of Houston. Could you please help me in re-modifying my destination place in the reservation?

ASSISTANT: Of course, I am very excited to help you in changing your destination place. Could you please hold on for a moment to look out for the reservation details in our portal?

USER: Sure, take your possible time.

ASSISTANT: I appreciate your patience. I could not able to find your reservation on your name in our portal, I am truly remorseful.

USER: That's ok, you don't have to be sorry. May be my secretary had already changed the reservation as I yelled at her. I will ask her and get back to you if any concern.

ASSISTANT: We will be happy if it has already changed. Please feel comfortable to reach us.

USER: Thank you for your great service.

ASSISTANT: You are welcome Collins. Thank you for communicating with us. We are much obliged to serve you.