You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am looking for a flight from DCA to LAX, can you book the flight for me?

ASSISTANT: Sure, on which dates you want to travel?

USER: My travelling dates are from 01/30 till 02/02.

ASSISTANT: May I know your name?

USER: Myself Jack Perez.

ASSISTANT: Thank you for providing your details. No flight found for this search. Sorry for inconvenience.

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

ASSISTANT: Welcome.