You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hellow.

USER: I am Emma Hill.

ASSISTANT: How may I assist you?

USER: I would like to visit JFK, can you help me to book a flight ticket from LAS?

ASSISTANT: Sure, can you please conform me your travelling dates?

USER: I am travelling from Apr 13 to Apr 15.

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flights available on your requested dates.

USER: That's ok, no problem. Thank you for your support.

ASSISTANT: Welcome, thank you for reaching us.