You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to change my existing reservation, due to some financial issues. Can you help me?

ASSISTANT: Sure, I am here to help you. May I know your name please?

USER: Thank you, I am Rebecca Johnson.

ASSISTANT: Ok, please wait a minute.

USER: Ok, I will wait.

ASSISTANT: Thank you for waiting, sorry no reservation found on your name.

USER: Oh! It may not be booked properly due to some technical issues while booking. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching us, have a good day.

USER: You are welcome.