You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Please book a ticket with the name Dennis Nelson.

ASSISTANT: Sure, help me with the travelling dates.

USER: Sure, my travelling dates are from 01/14 and 01/16.

ASSISTANT: May I know your airport codes?

USER: My locations are from DTW to HOU.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: There is  a flight with number 1016 in airline Southwest. Can I book it?

USER: Please proceed.

ASSISTANT: Your ticket is booked, happy journey.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.