You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am David Thompson. I need to attend a meeting in Houston. Can you help me to book a ticket from CLT to HOU?

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

USER: I want to fly on 04/05 and 04/07.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: There is a flight in Southwest airline with price 200, can I book it?

USER: Proceed to booking.

ASSISTANT: Your ticket has been booked with flight number 1026.

USER: Thank you for your help.

ASSISTANT: You are welcome.