You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you at present?

USER: I want to meet my cousin on his birthday, so please book my ticket from DFW to SEW.

ASSISTANT: Sure, may I know your trip dates?

USER: My terminus airport code is SEA. My itinerary dates are Mar 7 and Mar 9.

ASSISTANT: Ok. Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Please share your name to proceed further.

USER: Frank Clark here.

ASSISTANT: Do you have any more requirements?

USER: No.

ASSISTANT: Sorry, there are no flights on your required dates.

USER: No problem, thank you.

ASSISTANT: Thank you for approaching us.