You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Emily Lee.

ASSISTANT: Emily Lee, how may I aid you?

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

ASSISTANT: Sure, please provide your itinerary dates.

USER: I want to travel on 12/28, and return on 12/30.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Please give me a moment to check for available flights.

USER: Sure.

ASSISTANT: Delta airlines with flight 1028 is providing service with a connecting flight and ticket costs you 200 in economy class.

USER: Proceed with the booking.

ASSISTANT: Your ticket is confirmed.

USER: Thanks for the help.

ASSISTANT: Thank you for reaching us.