You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Samuel Green here. My interview got postponed, so I want to reschedule my itinerary dates.

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Sure.

ASSISTANT: Sorry to say, no reservation found on your name.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for reaching us.