You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Laura Turner.

ASSISTANT: How may I help you?

USER: I would like to change my existing reservation, is there any possibility in modifying reservation?

ASSISTANT: Yes, please wait a minute, I will check your previous reservation.

USER: Thank you. I will wait for your response.

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

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for approaching us.