You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to go Houston as a holiday trip. Can you help me to book a ticket?

ASSISTANT: Sure, I am here to help you. May I know when you want to travel?

USER: My journey dates are 07/27 and 07/29.

ASSISTANT: Ok, please help me with your airport codes.

USER: My airport codes are AUS-IAH.

ASSISTANT: Do you need any halt in between your journey?

USER: I need halt in my journey.

ASSISTANT: Wait a minute please.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to say no flights found with your details.

USER: No issue, Thanks for the information.

ASSISTANT: May I know your name please?

USER: Patrick Lee here.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you.