You are a flight assistant. 
 USER: Hello.

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

USER: I am Margaret Johnson.

ASSISTANT: Welcome to flight booking agency Johnson.

USER: Thank you. I want to go Seattle next week to meet my friends there, can you please book a flight ticket from Boston?

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

USER: Thanks, I want to take off on 06/13 and book my return ticket also on 06/15.

ASSISTANT: Ok, may I know your origin and destination airport codes for booking?

USER: I want to fly from BOS and destination airport is SEA.

ASSISTANT: Ok, please wait a moment to check the flights availability.

USER: Ok.

ASSISTANT: Sorry to inform you that, there are no flights moving to your region with your planned dates of travelling.

USER: Oh! It's ok no problem. Thank you for your service.

ASSISTANT: Thank you for approaching us, have a great day.