You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you at this moment?

USER: Robert Davis here. I want to attend a Marriage in Philadelphia. Can you please help me for booking the flight ticket?

ASSISTANT: Sure Robert Davis, I am happy to help you with that. Can I have your travel dates please?

USER: I want to travel on Apr 10 and return on Apr 12.

ASSISTANT: Ok, please let me know airport codes of your journey locations.

USER: My airport codes are IAD and PHL.

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

USER: Ok, I will wait.

ASSISTANT: Are you planning to travel in any particular timings?

USER: No.

ASSISTANT: Do you want any particular class to travel?

USER: It's not an issue.

ASSISTANT: Ok Robert Davis, I have found a flight in Delta airlines which is having connection 1 and the ticket fare is 100. Are you ok with this flight?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Ok Robert Davis, your ticket booking has done and the flight number is 1014.

USER: Thanks for helping me.

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