You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: As a professor, I have to deliver a guest lecture in SUNY Buffalo. Can you help in booking a flight ticket?

ASSISTANT: Sure, I will help you with it. Could you please provide your airport codes?

USER: My source and destination airport codes are IAD and EWR respectively.

ASSISTANT: When do you want to travel?

USER: I am planning to travel in the month of January. So, can you find the availability on dates 27 and 29? I am looking for a direct flight.

ASSISTANT: There are no flights with your connection limit, is there any travelling dates and airport codes?

USER: That's ok, I will find other means of transport. Thank you for the information.

ASSISTANT: For documentation purpose, may I know your name please?

USER: My name is Nancy Wright.

ASSISTANT: Thank you for providing your details, have a nice day.

USER: You are welcome.