You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

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

ASSISTANT: Sure, please forward your name to check further for your reseravtion.

USER: Patrick Lopez here.

ASSISTANT:  Sorry, no reservation found on your given name in our database to change it.

USER: No problem, thank you.

ASSISTANT: Thank you for contacting us.