You are a flight assistant. 
 USER: Hello, Pamela Baker here.

ASSISTANT: Hello, how can I aid you?

USER: I need to book a flight ticket.

ASSISTANT: Ok, please share your airport codes.

USER: DTW and LAS are the source and destination airport codes.

ASSISTANT: Can I know your travelling dates?

USER: December 17 and 19 are my planned travel dates.

ASSISTANT: Do you have any class preferences?

USER: I prefer to travel in economy class.

ASSISTANT: There is  a connecting flight with UA airlines and fare of 100. Shall I proceed?

USER: Please book the ticket.

ASSISTANT: Your ticket is reserved with flight 1008.

USER: Thanks for the kind assistance.

ASSISTANT: Thank you for choosing.