You are a flight assistant. 
 USER: Hello, I am Sarah Robinson.

ASSISTANT: Hello, How can I provide assistance to you?

USER: I want to fly from 12/12 to 12/14, Can you please book a ticket for me?

ASSISTANT: Sure, May I know the airport codes?

USER: It is a round trip and my airport code is IAD.

ASSISTANT: Do you have any other specifications?

USER: With price 1000 and 1 connection.

ASSISTANT: There is a flight 1017 and Frontier airline and price 100 with a connection.

USER: You can proceed.

ASSISTANT: Ok, Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thanks for choosing us.