You are a flight assistant. 
 USER: Hello, Thomas Hernandez here.

ASSISTANT: Hello, how best can I assist you today?

USER: I want to visit waterwalls which is at Houston, TX-HOU, can you please help me with booking flight ticket?

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: Kindly provide your travelling dates.

USER: Sure, my travelling dates are 07/31 and 08/02.

ASSISTANT: Do you need any stopover in between the journey?

USER: Yes, I need a halt in between the journey.

ASSISTANT: May I know your source code?

USER: My source code is Phoenix, AZ-PHX.

ASSISTANT: Please give me a minute, I will get back to you.

USER: Ok.

ASSISTANT: Thanks for your valuable time. We found a flight with number 1000 in Southwest airline and the ticket price is 100.

USER: Please proceed with booking.

ASSISTANT: Your ticket is booked and your E- ticket will be sent to your registered email id.

USER: Thank you.

ASSISTANT: Thanks for availing us.