You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Joseph Miller.

ASSISTANT: How may I guide you?

USER: I would like to travel from BOS to JFK, could you help me out?

ASSISTANT: Sure, please share your travel date.

USER: My preferable dates are from 06/06 to 06/08.

ASSISTANT: Sorry, no flights available.

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

ASSISTANT: Thank you for reaching us.