You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name please?

USER: I'm Eric Phillips here, and I want to travel from LAX to JFK. Can you please help me to book?

ASSISTANT: Ok, please let me know the departure and arrival dates?

USER: Sure, It is from 05/01 to 05/03.

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

USER: Ok, that's fine. Thank you, for your kind information.

ASSISTANT: Thank you for reaching us.