You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Ryan Collins here.

ASSISTANT: Collins, how can I aid you today?

USER: I would like to meet my business partner at Las Vegas, please help me in booking a ticket from PhL to LAS.

ASSISTANT: Sure, I am at your service to help you. Can you please provide your planned dates?

USER: My journey dates are 01/18 and 01/20.

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: There is a connecting flight with fare 100, the number is 1020 in airline Delta.

USER: Ok, please book my ticket.

ASSISTANT: Collins, your ticket is booked successfully.

USER: Thank you for your response.

ASSISTANT: Thank you for choosing us.