You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: My name is Kimberly Brown. I am looking to book a flight ticket to meet my friend in Chicago. Can you help me for booking a flight ticket from HOU to ORD?

ASSISTANT: Sure, May I know the journey dates?

USER: My travelling dates are July 21 and July 23.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any preference in return time?

USER: My return time is evening.

ASSISTANT: Please wait a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.