You are a flight assistant. 
 USER: Hello. I am Gary Walker.

ASSISTANT: Hello, How can I provide service to you?

USER: I have to attend my sister's wedding at Denver, could you please help me with booking a flight ticket?

ASSISTANT: Sure, I will help you in that. May I know your landing point?

USER: My nearest source and destination airport codes are SEA and DEN.

ASSISTANT: help me with the travel dates?

USER: I would like to take off on 09/07 and return on 09/09.

ASSISTANT: Ok, please hold on.

USER: Sure.

ASSISTANT: We found a Frontier 1023 airline, with price 300 matching your needs. Shall I move ahead?

USER: Please proceed with the booking if the connection is 1.

ASSISTANT: Your ticket has been confirmed with this connecting flight.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for opting us.