You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Alexander Lee.

ASSISTANT: How can I assist you now?

USER: I want to book a ticket from CLT to IAH to attend seminar, can you help me in booking?

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

USER: I am departing on Aug 19 and return on Aug 21.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Southwest airlines running a flight in your route with connection 1 and the ticket fare is 100. Is it ok for you?

USER: Please proceed for booking.

ASSISTANT: Ok Alexander Lee, your ticket booking has done  and the flight number is 1018.

USER: Thank you for your help.

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