You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Emma Campbell here. I want to attend a seminar in Dallas. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, please provide your dates of travel?

USER: My travelling dates are 04/10 and 04/12.

ASSISTANT: Can you please let me know your airport codes?

USER: My airport codes are JFK and DFW.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I will wait.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us.