You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: My name is Christopher Anderson. I would like to travel from SEA to EWR, could your help me out?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My preferable dates are from 05/11 to 05/13. Please check for direct flights.

ASSISTANT: Sorry, there are no flights found in our database.

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

ASSISTANT: Thank you for reaching us.