You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Mary Johnson. I would like to book a ticket from DCA to IAH, can you help me?

ASSISTANT: Sure, I am very happy to help you. Could you please provide me your travel dates?

USER: My travel dates are 08/22 and 08/24.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: There is a flight available with Hawaiian airlines and the ticket fare is 100 only. Shall I book the ticket for you?

USER: You can book it.

ASSISTANT: Johnson, your ticket is booked and your flight number is 1002.

USER: Thank you for booking.

ASSISTANT: You are welcome and thank you for choosing us.