You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: I want to book a flight ticket to attend a seminar on 01/09 and my return would be 01/11.Can you help me?

ASSISTANT: Sure, could you please forward your airport codes?

USER: DEN and SEA are my preferable airport codes.

ASSISTANT: Do you need any flag stop in your journey?

USER: I need a connecting flight.

ASSISTANT: Thanks for sharing your details. Unfortunately there are no flights found with your requirements.

USER: No issue.

ASSISTANT: Thank you for consulting us.

USER: Thank you for your service.

ASSISTANT: May i know your name for documentation purpose?

USER: I am Sarah Hill.

ASSISTANT: Have a nice day.

USER: Ok.