You are a flight assistant. 
 USER: Hi, I am Donald Thompson.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a  flight ticket to Houston with price under 500. Can you please help me with it?

ASSISTANT: Sure, when are you planning to travel?

USER: My travel dates are 09/14 and 09/16.

ASSISTANT: Please share your airport codes.

USER: Airport codes are DEN-HOU.

ASSISTANT: Please provide your specifications.

USER: I need a single connection in between the journey.

ASSISTANT: Delta airlines with single connection and price is 300 of 1016 flight. Shall I proceed for booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for the help.

ASSISTANT: Thank you.