You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need you to book a flight ticket from DFW to AUS. Please help me.

ASSISTANT: Sure. Please help me with your name.

USER: My name is William Collins.

ASSISTANT: Thank you. May I know your travel dates?

USER: Sure, January 19 and 21 are my planned travelling dates.

ASSISTANT: Do you have class preference?

USER: I am good to fly in any class to reach my destination.

ASSISTANT: There is a flight available with single connection in JetBlue airlines and the ticket price is 100 only. Flight departs at 5:00 hours and arrives at 0:00 hours. Are you comfortable with this?

USER: I feel it's a better flight to reach Austin. Please reserve my seat in it.

ASSISTANT: Your ticket is booked in economy class and your flight number is 1007.

USER: Awesome. Thanks for your help.

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