You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mary Walker.

ASSISTANT: What can I do for you at this moment?

USER: I am planning to go for a round trip to Houston, TX - IAH, so please help me in flight booking.

ASSISTANT: Sure, I am here to help you. Ok, do you need any halt in between the journey?

USER: Yes, I need a halt.

ASSISTANT: Ok, on which dates would you like to travel?

USER: I want to fly on Oct 29, return on Oct 31.

ASSISTANT: Ok, how much you can afford for a flight ticket?

USER: My price limit is 200.

ASSISTANT: There is a Hawaiian airline with fare of 100 and a halt in between the journey matches your schedule. Shall I proceed with booking?

USER: You can reserve it.

ASSISTANT: Your ticket has been confirmed with flight number 1023.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.