You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in booking a flight ticket from EWR to IAD?

ASSISTANT: Sure, please provide your travel dates.

USER: I want to fly on July 09 and return on July 11.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Myself Mark Scott.

ASSISTANT: sorry, I did not find any flights for you.

USER: Not an issue. Than you.

ASSISTANT: Thank you for reaching us.