You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Sarah Scott.

ASSISTANT: How can I help you today?

USER: Could you please make a plane reservation from Detroit to Austin?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please mention your travelling airport codes.

USER: My airport codes are from DTW to AUS.

ASSISTANT: When you are willing to travel?

USER: I am willing o travel on Mar 19th and return on Mar 21st.

ASSISTANT: Do you have any specifications?

USER: Yes, the return time should be afternoon.

ASSISTANT: Sorry, no flights are available on your travel dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.