You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Emily  Walker here. I need to book a flight ticket from Oakland, my preferable airport codes are from OAK to IAH. Can you please help me with booking?

ASSISTANT: Sure Emily, can you please share me with your dates of travel?

USER: My respective travelling dates are from 08/19 to 08/21.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: I found a flight with the connecting flight of fare 100 and the airline is Delta, are you ok with this?

USER: Sure, you can proceed with that ticket booking.

ASSISTANT: Ok, your booking is done with the flight number 1023.

USER: Thank you for booking.

ASSISTANT: You are welcome, have a safe journey.

USER: Thank you for your help.