You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My interview has been postponed, so I want to reschedule my itinerary dates.

ASSISTANT: Ok. May I know your name please?

USER: Eric Williams here.

ASSISTANT: Wait a while, kindly.

USER: Make it fast.

ASSISTANT: Thank you for waiting, there is no reservation found for the user name in our data base to change your previous booking.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.