You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I am Richard Collins. I have to attend a Live Concert at Seattle, could you please help me with booking a flight ticket from DFW to SEA?

ASSISTANT: Sure, I will help you. May I know your travelling dates?

USER: I would like to depart on Jan 11th and return on Jan 13th.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other specifications?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Thanks for your details, there are no flights found on your data.

USER: Ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: Thank you.