You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit Jefferson Memorial at Washington, DC-IAD. Please help me to book a ticket.

ASSISTANT: Sure, Can you please provide your journey details?

USER: I want to travel from San Francisco, CA-SFO on 10/15 to 10/17.

ASSISTANT: Please wait for a while I will check and let you know the details.

USER: Ok.

ASSISTANT: To proceed further may I know your name please?

USER: Sure, I am Jason Hill.

ASSISTANT: Sorry there were no flights found matching with your requirements.

USER: Ok, thank you for your quick response.

ASSISTANT: Thank you for reaching us, have a nice day.