You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard Allen.

ASSISTANT: How can I assist you?

USER: Can you help me in booking the ticket from CLT to IAD?

ASSISTANT: Sure Allen, can I know the travel dates please?

USER: My planning dates are from 07/13 to 07/15.

ASSISTANT: Ok, wait a moment please.

USER: Ok.

ASSISTANT: There is a flight in AA airline with price 100, can I book it?

USER: That's great, please proceed.

ASSISTANT: Your ticket has been booked with flight number 1015.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.