You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Kevin Williams here.

ASSISTANT: How can I assist you today?

USER: I would like to book a ticket to Houston to visit my old friend there, can you please help me in booking a ticket?

ASSISTANT: Sure, will you provide your airport codes please?

USER: Source airport code is OAK and destination airport code is IAH.

ASSISTANT: When would you like to travel?

USER: The travelling dates are from 10/01 to 10/03.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Thank you for waiting. Based on your details, there is a flight with price 100 and the connections 1 is available.

USER: Please proceed with the booking.

ASSISTANT: Your ticket is booked. The flight number is 1019 and the airline is Delta.

USER: Thank you for your help.

ASSISTANT: Welcome, have a great day.

USER: Most welcome.