You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michelle Jones.

ASSISTANT: How can I help you?

USER: I would like to book a ticket from IAD to DFW, can you please help me out?

ASSISTANT: Let me know your travelling dates?

USER: I am travelling on these dates July 31st and Aug 2nd.

ASSISTANT: Do you have any preference?

USER: I need a return time in morning.

ASSISTANT: Connecting flight can be booked with airline AA for price 200. Shall I book a ticket?

USER: Ok, you can proceed.

ASSISTANT: Ticket is booked having flight number 1010.

USER: Thank you for your services.

ASSISTANT: Thanks.