You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am William Phillips.

ASSISTANT: How may I assist you?

USER: Can you please book a flight ticket from Phoenix to Las Vegas? As I need to attend  a function there.

ASSISTANT: Sure, I am here to help you. Can you please provide your airport codes?

USER: Sure, I would like to travel from PHX to LAS.

ASSISTANT: Can you please provide your planned travel dates?

USER: Sure, I need to travel on the dates of Apr 16 and Apr 18.

ASSISTANT: Do you have any other preferences?

USER: Yes, I need connection 1.

ASSISTANT: I found an economy class ticket in Delta airlines with fare 200 and it has a single connection. Can I proceed?

USER: That is fine, please proceed with booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1020.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.