Hello, I am Timothy Parker.
user
Hello, By what way may I oblige you now?
assistant
I am planning my holidays at Houston with my cousin, so please assist me to a flight reservation.
user
Sure, I will help you. To book a ticket, may I have your airport codes?
assistant
Sure, my airport codes are Denver, DEN and destination is HOU.
user
Are you having any specifications?
assistant
I need a single connection in between journey.
user
Help me with your travelling dates.
assistant
Price limit is 500. I want to leave on 12/28 and return on 12/30.
user
Thanks for your time. Unfortunately, we have no flights with your requirements.
assistant
Ok, thanks for informing me.
user
Thank you for your time  with us.
assistant