You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is BrandonKing.

ASSISTANT: How may I help you?

USER: I would like to travel from LGA to DFW, could you help me out?

ASSISTANT: Sure, help me with your travel dates.

USER: My preferable dates are from 01/02 to 01/04.

ASSISTANT: Sorry, no flights available.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you for reaching us.