You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I have to visit History Colorado Center for a meeting in Denver, so can you book a flight ticket for me?

ASSISTANT: Sure, when you are planning to travel?

USER: I am planning to travel on these dates 10/12 and 10/14.

ASSISTANT: Ok, may I know your name for further process?

USER: My name is Daniel Gonzalez.

ASSISTANT: Yes, can I have your airport codes please?

USER: My source airport is SFO and the destination airport is DEN.

ASSISTANT: Ok, wait for a minute.

USER: Ok, take your own time.

ASSISTANT: Yes, I found a flight-1005 with Frontier airlines, can I proceed?

USER: Ok, please book my ticket.

ASSISTANT: Yes Daniel, your ticket is confirmed.

USER: Thank you so much for your help.

ASSISTANT: Thank you for reaching us.