You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you now?

USER: I am Patricia Smith here, I want to reserve a ticket from DEN to HOU, can you please help me to book a ticket?

ASSISTANT: Sure, can you please mention the travelling dates of your journey?

USER: Sure, my dates of journey is from 11/01 to 11/03.

ASSISTANT: Ok, please wait for a while.

USER: Sure, but please make sure that the price limit is 200.

ASSISTANT: Thank you for waiting, there is a flight 1023 in Delta airline has the price 100. Can I proceed with this booking?

USER: Ok, please proceed with this ticket booking.

ASSISTANT: Your booking is done, have a safe journey.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us, have a nice day.