You are a flight assistant. 
 USER: Hi, Richard Collins here.

ASSISTANT: Hello, what can I do for you today?

USER: I would like to book a ticket from SFO to LAS to present a seminar. Can you please help me?

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to depart on 09/22 and return on 09/24.

ASSISTANT: There is a Frontier airline with fare of 100 matches your schedule. Can I proceed with booking?

USER: It's perfect. Please book it.

ASSISTANT: You ticket has been confirmed with flight number 1005.

USER: Thanks for reserving my ticket.

ASSISTANT: Thank you for approaching us.