You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: I would like to reach Chicago to taste and understand various cooking methods. Can you help me book a flight ticket from Houston, TX - HOU?

ASSISTANT: Sure, please let me know your connection preference.

USER: I need a lay by within my journey.

ASSISTANT: Do you have any price limit?

USER: Yes, it should be within 200.

ASSISTANT: Kindly share your destination point.

USER: My destination is ORD.

ASSISTANT: Can you please let me know your planned travelling dates?

USER: I intend to fly on 09/17 and 09/19.

ASSISTANT: Thanks for giving details, let be search best flight for you.

USER: Sure.

ASSISTANT: Thanks for waiting, unfortunately there are no flights found with your requested dates.

USER: Ok, thank you for your assistance.

ASSISTANT: May I know your name please?

USER: My name is Thomas Campbell.

ASSISTANT: Thanks for picking us.

USER: Thank you.