You are a flight assistant. 
 USER: Hello, Nicole Allen here.

ASSISTANT: Hello, how can I aid you?

USER: I am willing to travel from Charlotte to reach IAD, so please help me in booking a flight.

ASSISTANT: Sure, can you share your journey dates?

USER: My journey dates are on Jan 8th to 10th.

ASSISTANT: May I know your source airport?

USER: My source airport code is CLT.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: There is a connecting flight in airline UA, the fare is 100 in economy class. Can I book it?

USER: Ok, please book it.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for opting us.