You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need to travel from OAK to DCA, can you help me?

ASSISTANT: Sure. Please let me know your travelling dates.

USER: My journey dates are Sep 27 to 29.

ASSISTANT: Is there any connection preference?

USER: I need a connecting flight.

ASSISTANT: Do you have any specific time preference?

USER: No.

ASSISTANT: Is there any specification?

USER: No, please proceed further.

ASSISTANT: May I know your name?

USER: I am Lisa Davis.

ASSISTANT: Found ticket with Delta airlines for price 100 having flight number 1026. Shall I book a ticket?

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.