You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jack Rodriguez here.

ASSISTANT: How can I assist you?

USER: As I have planned a tour to meet my childhood friends at Denver, assist me in finding a best flight from Houston TX-HOU.

ASSISTANT: Ok, may I know your travelling dates?

USER: 03/15 to 03/17 will be my travelling dates.

ASSISTANT: Ok, may I know your destination airport codes?

USER: My destination airport code is CO-DEN.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT:  Here is a connecting flight with fare 100 and 1010 as flight number. Shall I proceed with booking?

USER: You can proceed.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you.

ASSISTANT: Most welcome.