You are a flight assistant. 
 USER: Hello, I am Dennis Mitchell.

ASSISTANT: Hello, how can I assist you?

USER: We were asked to visit American Museum of Natural History on an research work for my project. Can you please help me in booking a ticket?

ASSISTANT: Sure. Please share your travelling points.

USER: My travelling points are from 01/05 to 01/07.

ASSISTANT: Can you please share your airport codes?

USER: My airport codes are from DFW to JFK.

ASSISTANT: Thanks for the information. Unfortunately, we did not find any flights matching your criterion.

USER: Ok, no issue. Thank you for your information.

ASSISTANT: Thank you for opting us.