You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you  please book a flight ticket from IAD to SEA?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your travel dates?

USER: Sure, I have planned my travel dates as Jan 06 and Jan 08.

ASSISTANT: Do you need any break in your journey?

USER: I am looking for single connecting flight.

ASSISTANT: May I know your depart and arrival time?

USER: I would like to depart in evening time so  please make sure that.

ASSISTANT: Do you have any other requirements?

USER: No, I do not have any other specifications.

ASSISTANT: There is a connecting flight with fare of 800 and 1011 flight number. Shall I proceed?

USER: That is fine, please  proceed with booking.

ASSISTANT: May I know your name please?

USER: Sure, myself Samantha Harris.

ASSISTANT: Your seat has been reserved with Frontier airlines in business class.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.