You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Jerry Mitchell here. My wedding has been postponed, so I want to reschedule my itinerary dates.

ASSISTANT: Sure, I am here to help you out. Please allow me a moment.

USER: Sure.

ASSISTANT: Jerry Mitchell, I found an active reservation on your name in our database. May I know your trip dates?

USER: My itinerary dates are June 13 and June 15.

ASSISTANT: Can you provide me your location airport codes?

USER: My genesis and terminus airport codes are MSP and LAS.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: May I know your preferable flight travelling timings?

USER: I am flexible to travel at any time.

ASSISTANT: Sorry Jerry Mitchell, there is no flight in your route with your travel dates.

USER: No problem, I will find an alternative way to travel.

ASSISTANT: Ok, hope you reach your destination on time.

USER: Thank you for assisting me.

ASSISTANT: Thank you for reaching us.