You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I am Alexander Clark want to visit BOS, can you book a ticket from SEA?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your planned dates of travelling?

USER: Sure, my travelling dates will be 01/23 and 01/25.

ASSISTANT: Please wait a moment to check the flights availability in your route.

USER: Ok.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 is provided by UA airlines. Shall I proceed with this?

USER: Ok, proceed with my booking.

ASSISTANT: Ok, your ticket has been booked in flight number 1021.

USER: Thank you.

ASSISTANT: Thank you for reaching to our services, have a great journey.