You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My name is James Perez. I want to attend an event in Washington-DC, can you please help me with booking my flight ticket from LAX to IAD?

ASSISTANT: On what date you like to travel?

USER: Sure, I would like to depart on 11/02 and return on 11/04.

ASSISTANT: I am sorry no flights found on your requirements.

USER: Not an issue, thank you for checking.

ASSISTANT: Thank you for reaching us.