You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for today?

USER: I need to change my reservation which I have done earlier to join with my friend in youth festival but suddenly it got cancelled. So, please help me with that.

ASSISTANT: Welcome to our flight booking agency, I will be helping you with changing your reservation.

USER: Thank you.

ASSISTANT: Can you please mention your name so, that I can check your previous reservation.

USER: Sure, please check the reservation with the name of Susan Turner.

ASSISTANT: Susan Turner, I have to inform you that, there is no reservation found under your name.

USER: Oh! May be booking is not done properly.

ASSISTANT: Sorry for the inconvenience.

USER: Anyway, thank you for your time.

ASSISTANT: Have a nice day, keep reaching us.

USER: Sure, I will try to reach you.