You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Karen Lewis here. I am planning to book a ticket from  San Francisco. Could you please help me with booking a flight ticket from SFO to DCA?

ASSISTANT: Can you help me by providing your trip dates?

USER: My planned trip dates are 06/29 and 07/01. Please make sure that I want a connecting flight in my journey.

ASSISTANT: We found a flight with your provided information in Southwest airline with 1 connection and the fare is 100. Shall I confirm your ticket with this airline?

USER: Yes, you can confirm the ticket booking.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for your help in booking.

ASSISTANT: Most welcome.