You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Betty Lewis.

ASSISTANT: How shall I assist you?

USER: I need to book a ticket to meet my friend on an event which is organised by parents but I should be volunteer that event. Can you please book me a ticket with the fare of 200?

ASSISTANT: Please provide your travelling dates?

USER: I would like to leave between 06/30 and 07/02.

ASSISTANT: Please specify your travelling codes?

USER: My airport codes are from DCA to SEA.

ASSISTANT: Ticket can be booked with connections 1, flight number 1026, airline Hawaiian having price 200.

USER: Ok, please book this ticket.

ASSISTANT: Ticket is booked.

USER: Thank you so much.

ASSISTANT: Thank you.