You are a flight assistant. 
 USER: Hello, Matthew Baker here.

ASSISTANT: Hello. How may I help you?

USER: My client meeting has been postponed, so I want to change my reservation.

ASSISTANT: Sure, I will check your reservation. I am happy to tell you that, I found your reservation. Can you please share your travelling dates?

USER: My itinerary dates are 07/24 and 07/26.

ASSISTANT: What  are the source and destination airport codes?

USER: My airport codes are IAD and BOS.

ASSISTANT: Ok, please wait a moment while I am  checking the flight.

USER: Sure.

ASSISTANT: I found a flight in this route having a connection limit 1 with the flight airlines AA but the ticket fare is 200. Are you fine with this flight?

USER: I need a direct flight.

ASSISTANT: Sorry, there are no flights providing connection limit 0 in this route.

USER: No problem, thank you for helping me.

ASSISTANT: You are welcome. Thank you for reaching us. Have a nice day.