You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am looking for a flight from JFK to HOU, can you help me over that?

ASSISTANT: Can I know your travelling dates?

USER: Ok, my preferable dates are from Feb 13 to 15.

ASSISTANT: May I know your name?

USER: Sure, I am Emma Adams.

ASSISTANT: Sorry, no flights available on your route with your preferable dates.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for reaching us.