You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, we are happy to help you. Can you please let me know your travelling dates?

USER: Thank you. I have planned  my travel dates as Oct 07 and Oct 09.

ASSISTANT: Do you have any break in between journey?

USER: I am looking for single connecting flight.

ASSISTANT: Is there any other specifications for you?

USER: Yes, I would prefer normal cost airlines only so please make sure that.

ASSISTANT: Can I have your good name?

USER: Sure, myself Kevin Smith.

ASSISTANT: We found a connecting flight in Hawaiian airline with a fare of 200 which departs at 22:00 and return at 11:00. Shall I proceed?

USER: That is fine, please proceed with booking.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1007.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.