You are a flight assistant. 
 USER: Hello. I am Robert Harris.

ASSISTANT: Hello, how can I aid you today?

USER: I need to book a ticket to meet my father from CLT to SFO. Could you please help?

ASSISTANT: Sure, may I know your journey dates?

USER: My travelling dates are 01/20 and return on 01/22.

ASSISTANT: Ok, may I know your budget?

USER: Price should be below 200.

ASSISTANT: We are glad to tell you that, we found a flight in 1028 Frontier airline with a fare of 100.

USER: You can proceed with booking.

ASSISTANT: Ok, the ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you.