You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samantha Johnson.

ASSISTANT: Samantha Johnson, how may I render you?

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

ASSISTANT: I am here to help you, please provide your trip dates.

USER: I will fly on Nov, 23 and need to return on Nov, 25.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight with a price limit of 5000.

ASSISTANT: AA airlines with flight 1025 is providing service with a connecting flight on your route and ticket costs you 100 in economy class.

USER: Ok, please book the ticket.

ASSISTANT: Your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.