You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you today?

USER: I am David White. I need modify my reservation, can you help me out please?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Happy to say this, I found your reservation. Can you please share your trip dates?

USER: Ok,my trip dates re from 02/19 till 02/21.

ASSISTANT: Ok, kindly share your new airport codes?

USER: My location airport codes are from CLT to SEA.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Flight 1014 in Southwest airlines is available for you with 1 connection. Can I proceed?

USER: That's apt to my intent, please proceed with it.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: Welcome, have a nice day.