You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please book a flight ticket from DCA to SEA?

ASSISTANT: Sure, please provide your travelling dates.

USER: Thank you. I have planned my travel dates as Jan 25 and Jan 27.

ASSISTANT: Ok, please let me know your connection limit.

USER: I am looking for single connecting flight.

ASSISTANT: Ok, Do you have any other preferences?

USER: No, I do not have any more specifications.

ASSISTANT: Ok, please wait.

USER: Sure, take your time.

ASSISTANT: Thank you for your time, we found a connecting flight in 1021 American Airlines with a fare of 200.

USER: That is fine, please proceed with booking.

ASSISTANT: May I know your name?

USER: Sure, myself Carol Hall.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.