You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Eric Phillips. I am planning to travel from EWr to DFW, can you help in booking a flight for me?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travelling dates 10/02 to 10/04.

ASSISTANT: Let me check for the availability of flight.

USER: Ok.

ASSISTANT: Eric, I am sorry to inform you that there is no flight available at your requested dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us, have a great day.