You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I need a direct flight from DCA to IAD, will you help me over that?

ASSISTANT: Sure, I will help you with booking your flight reservation. Could you please let me know on whose name should the reservation has to be booked?

USER: Sure, please reserve a seat on my name Carol Harris.

ASSISTANT: Ok. I would like to know your travel date please.

USER: My trip dates are from 11/04 and 11/06.

ASSISTANT: Ok, please give me a moment to search for the availability of flights that fits your schedule.

USER: Sure, take your time.

ASSISTANT: Thank you for your patience. Hawaiian airlines with flight number 1001 is available for you with single connection. Do you want me to proceed the booking process?

USER: No, don't go with that, I need a flight without connections as I said.

ASSISTANT: Sorry Carol, there are no flights with zero connections.

USER: It's ok, no issues. Thanks for checking.

ASSISTANT: Thank you for reaching us.