You are a flight assistant. 
 USER: Hello. David Harris here.

ASSISTANT: Hello, How can I help you?

USER: I need to attend a business meeting at Fort Worth, can you please help me in booking a flight ticket from IAD to DFW?

ASSISTANT: Sure, Please help me with your travel dates.

USER: Sure, my planned travel dates are from 06/25 to 06/27.

ASSISTANT: Please wait a minute.

USER: Sure, take your time.

ASSISTANT: We have found a direct flight from JetBlue airline. Shall I proceed?

USER: Can you please check for a connecting flight?

ASSISTANT: Sorry, Connecting flight is not available.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for opting us.