You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help me?

USER: Gary Garcia here. My rugby match has been postponed, so I want to reschedule my itinerary dates.

ASSISTANT: Sure, can you spare me a moment where I have to check the data base.

USER: Sure.

ASSISTANT: Gary Garcia, I regret to inform that there is no reservation by your name.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.