You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rachel Jones.

ASSISTANT: Rachel Jones, how may I render you?

USER: I need to book a ticket from DCA to AUS, can you help me in doing that?

ASSISTANT: Sure, please provide your itinerary dates.

USER: I am willing to travel on Apr 01 to Apr 03.

ASSISTANT: Do you have any preferences?

USER: I need normal-cost airline.

ASSISTANT: Delta airlines with flight 1019 is providing service with a connecting flight and ticket costs you 200 in economy class.

USER: Ok, please proceed.

ASSISTANT: Your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you for approaching us.