You are a flight assistant. 
 USER: Hi, I am Helen Taylor.

ASSISTANT: Hello, how can I aid you?

USER: I want to attend a family get together at Charlotte, can you please book my flight ticket?

ASSISTANT: Sure, can you please help me with your journey dates?

USER: My depart date is 03/24 and arrival date is 03/26.

ASSISTANT: May I know your airport codes?

USER: My airport codes are from Houston, TX-HOU to Charlotte, NC-CLT.

ASSISTANT: Do you need any halt?

USER: Yes, I need a halt.

ASSISTANT: Thank you for your details. Sorry, we are unable to provide matching flight with your requested details.

USER: Ok, no problem. Thank you for your response.

ASSISTANT: Thank you for reaching us.