You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Anna Phillips. Please book a flight ticket on dates 06/23 and 06/25.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you share me your source point and destination point?

USER: Yes, my airport codes are TX-DFW and TX-IAH.

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

USER: Yes, I need.

ASSISTANT: Ok, wait for some time I will check the availability of flights on your details and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: That's ok, thank you for the information.

ASSISTANT: Thanks for approaching us.