You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I would like to book a ticket to Philadelphia to visit a reading terminal market so, could you please book a ticket on 11/19?

ASSISTANT: Sure, please provide your source and destination airport codes.

USER: TX-HOU and PA-PHL are my airport codes.

ASSISTANT: Ok, when do you want to return?

USER: I want to return on 11/21.

ASSISTANT: Ok, May I know your name?

USER: My name is Jerry Hall.

ASSISTANT: Ok, do you need any connection limit?

USER: Yes, I need a halt.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for being patient, There is a flight found in 1001 AA airline with a fare of 100 which matches to your requirements.

USER: Please confirm my booking with this flight.

ASSISTANT: Sure, your ticket has been booked with a halt.

USER: Thank you for your kind response.

ASSISTANT: Thank you for reaching us.