You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: Can you please help me to book a flight ticket from IAD to SEA?

ASSISTANT: Sure, please share me your journey dates.

USER: My travelling dates are May 3 to May 5.

ASSISTANT:  Can I know your good name please?

USER: I am Barbara Baker.

ASSISTANT:  Do you have any connection limit?

USER: I need a single connection of flight.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.