You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you help me to book a flight ticket from EWR to DFW?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: I want to take off on 29 Nov and return on 01 Dec.

ASSISTANT: Do you have any preferences?

USER: I need a direct flight.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested criteria.

USER: It's ok, not a problem, thank you.

ASSISTANT: Can I know your name?

USER: I am Eric Taylor.

ASSISTANT: Thank you for reaching us.