You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I am Jonathan Jones. I need to go Los Angeles to meet my colleague so please help me with flight ticket booking from IAD to LAX.

ASSISTANT: Sure, I am glad to help you and can you please mention your preferable travel dates?

USER: Thank you. I have planned to travel on dates of Oct 18 and Oct 20.

ASSISTANT: Do you have any other requirements?

USER: Yes, I am looking for single connecting flight but even direct flight is also fine with me.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Delta airlines running a flight in your route with connection 1, is it ok for you?

USER: That is fine, please proceed with booking.

ASSISTANT: Ok Jonathan Jones, your ticket booking has done.

USER: Thank you for your help.

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