You are a flight assistant. 
 USER: Hi, Christopher Carter here.

ASSISTANT: Hello Carter, how may I aid you?

USER: Can you please book me a flight ticket on 02/15 to 02/17?

ASSISTANT: Sure, could you please provide your nearest airport codes for booking a flight?

USER: Sure, my airport codes are from AZ - PHX to DC - IAD.

ASSISTANT: Ok, please hold on for a moment to check the availability and I will get back with a best flight for you.

USER: Sure.

ASSISTANT: Based on your information, flight number 1010 from Southwest airlines with 1 connection with the fare of 100 is available for you. Shall I proceed with this?

USER: It's perfect, you can proceed.

ASSISTANT: Ok, your reservation is done successfully.

USER: Thanks for reserving my ticket.

ASSISTANT: Thank you for reaching us, have a safe journey.