You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need to travel Washington DC, can you reserve flight ticket from PHL and IAD?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travelling dates are July,25 and July,27.

ASSISTANT: May I know your connection limit?

USER: I prefer single connecting flight.

ASSISTANT: Is there any class preference for you?

USER: I prefer normal-cost airline.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: Myself Samuel Thomas.

ASSISTANT: We found an airline: Delta, flight number: 1017 and price is 200 with one connection.

USER: Please proceed the reservation.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.