You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What service that you are seeking from our agency?

USER: Myself Christopher Nelson. I want to go Washington next month, can you please book a flight ticket from Houston?

ASSISTANT: Sure, I am glad to help you.

USER: Thanks.

ASSISTANT: Can you please provide your preferable planning dates of travelling?

USER: I want to take off on 11/19 and confirm my return ticket on 11/21.

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

USER: I would like to fly from IAH and destination airport is DCA.

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

USER: Ok.

ASSISTANT: Based on your information, I have found a flight with 1 connection with the fare of 100 from Delta airlines. Is it ok for you?

USER: Oh! That's perfect, please confirm this airline ticket.

ASSISTANT: Sure, your reservation has been done in flight number 1016.

USER: Thank you for your help.

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

USER: Welcome.