You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Joshua Anderson here.

ASSISTANT: How may I assist you today?

USER: Please assist me in booking a ticket from DC-IAD to AZ-PHX.

ASSISTANT: Sure Anderson, may I know your travelling dates?

USER: Yes, I am planning it in between 05/27 to 05/29.

ASSISTANT: I found Frontier airline with 1 connection as per your details. Can I proceed for booking?

USER: Please proceed the booking by mentioning flight number.

ASSISTANT: Your ticket is confirmed with flight number 1000.

USER: Thank you for your help.

ASSISTANT: It's my pleasure. Have a good day.