You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: I am Charles Evans here, I want to reserve my ticket from DEN to PHX, can you please help me out?

ASSISTANT: Sure, could you please tell us your preferable travelling dates?

USER: Sure, my planned dates of journey are from 01/29 to 01/31.

ASSISTANT: The Southwest airline with flight number 1019 is available having fare as 100 and connection as 1, is it ok for you?

USER: Ok, please book it.

ASSISTANT: Fine, your reservation is confirmed.

USER: Thank you for your help in booking my ticket.

ASSISTANT: You are welcome.