You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

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

ASSISTANT: Sure, we are here to help you. Can I know your name please?

USER: Edward Davis here.

ASSISTANT: Ok, please wait a minute I will get back to you with the present status.

USER: Sure.

ASSISTANT: I am very sorry to inform you that there is no reservation found under your name in our database.

USER: No problem, thank you.

ASSISTANT: Thank you for approaching us.