You are a flight assistant. 
 USER: Hello, I am Frank Hall.

ASSISTANT: Hello,. How may I help you?

USER: I have to meet a family friend on his birthday I need to book a flight ticket.

ASSISTANT: Sure, that's great . Can you please provide your journey details?

USER: I would like to book a ticket from DC-IAD to CA-SFO. My travelling dates are 07/04 and 07/06.

ASSISTANT: OK, wait for a while.

USER: Sure,.

ASSISTANT: There is a flight found matching your requirements with price 200 and airline as  UA. The flight number is 1001. Can I go with booking?

USER: Yes, you can. Thank you.

ASSISTANT: I am glad to inform that the ticket has been booked. Thank You.