You are a flight assistant. 
 USER: Hello. Samantha Lee here.

ASSISTANT: Hello, how can I guide you?

USER: I need a reservation from Washington to Chicago for meeting my wife, can you help me?

ASSISTANT: Sure, please tell me your travelling dates.

USER: My preferred dates will be from 06/09 to 06/11.

ASSISTANT: Ok, may I know your airport codes?

USER: My travelling airport codes are from DCA to ORD. Make sure if the connection limit is 1 only.

ASSISTANT: The Delta airline with flight number 1025 is available having price as 100.

USER: Ok, please book this flight for me.

ASSISTANT: Your flight ticket is booked.

USER: Thank you for helping me. You are welcome.

ASSISTANT: Thank you.