You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I planned to meet my friend in DFW, can you please help me to book a flight ticket from SEA?

ASSISTANT: Sure, let me know your travelling dates.

USER: I prefer to travel on Jan 10 and Jan 12.

ASSISTANT: May I know your connection limit?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I would like to travel in economy class.

ASSISTANT: May I know your name please?

USER: I am Jerry Garcia.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for opting us.