You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you assist me to book flight to DFW from DCA?

ASSISTANT: Sure, let me know your travel dates please?

USER: I planned to travel on Apr 26th and return on Apr 28th.

ASSISTANT: Ok, is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any specific depart and arrival timings?

USER: I am ok with any timings.

ASSISTANT: Do you need any airline preference?

USER: I do not have any particular airline preference.

ASSISTANT: May I know your connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Can I know your name please?

USER: Sure, I am Jerry Collins.

ASSISTANT: Delta Airlines is providing direct flight with the ticket fare of 200 and depart time is 0:00 hours, arrival time is 19:00 hours, Shall I proceed?

USER: Please, proceed with this.

ASSISTANT: Your ticket has been confirmed by flight number 1002 and an economy class.

USER: Thank you for booking.

ASSISTANT: Thanks for choosing us.