You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Lisa Clark here.

ASSISTANT: How may I help you?

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

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: No problem, thank you.

ASSISTANT: Thank you for contacting us.