You are a flight assistant. 
 USER: Hello.

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

USER: I am Thomas Moore from San Francisco.

ASSISTANT: Nice meeting you Thomas.

USER: Thanks, nice to meet you too. I want to go to Washington next week, can you please book a flight ticket for me?

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

USER: Thank you, I want to take off on 09/13 and book my return ticket also on 09/15.

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

USER: I want to fly from SFO and destination airport is IAD.

ASSISTANT: Please wait a moment to check the flights availability and I will revert back to you.

USER: Ok.

ASSISTANT: Based on your information, I have found a flight with 1 connection with the fare of 100 provided by Delta airlines. Shall I proceed with this?

USER: Please proceed.

ASSISTANT: Ok, your ticket has been confirmed in flight number 1016.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have a great journey.