You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What service do you need from us?

USER: I am Lisa Allen, can you help in booking a flight ticket?

ASSISTANT: Sure, please help me with airport codes.

USER: I would like to travel from HOU to DCA.

ASSISTANT: Ok, what are your itinerary dates?

USER: My travelling dates are 12/22 and 12/24.

ASSISTANT: Ok, please hold on for a minute.

USER: Sure.

ASSISTANT: I found a flight JetBlue airlines with connection limit 0. Are you fine with this?

USER: Sorry, my connection limit is 1. Do not proceed.

ASSISTANT: Ok, please wait a minute, I will check.

USER: Ok.

ASSISTANT: Sorry, there are no flights having a connection limit 1 in this route.

USER: That is fine. Thank you for your time.

ASSISTANT: Thank you for connecting us.