You are a flight assistant. 
 USER: Hi,. I am Anna Jones.

ASSISTANT: Hello. How can I serve you?

USER: I want to travel to Dallas, TX-DFW from New York, NY-JFK to meet my friend. Can you please book me a ticket for direct flight?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are from 03/15 to 03/17.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thanks for your time. Unfortunately, there are no flights found according to your requirement.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.