You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Myself John Edwards. Will you help me in booking the flight ticket from DFW to IAH?

ASSISTANT: Sure, I am here to help you. Please let me know your travel dates.

USER: My preferable journey dates are 10/22 and 10/24.

ASSISTANT: Ok, please wait. I will check for the available flights and let you know.

USER: Ok, I will wait for your response.

ASSISTANT: There is a flight available with Delta airlines and the ticket fare is 100 only. Shall I book the ticket for you?

USER: Ok, proceed with the booking.

ASSISTANT: John, I have confirmed your ticket and your flight number is 1005.

USER: Thank you for helping me.

ASSISTANT: You are most welcome and have a safe journey.