You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amy Clark.

ASSISTANT: How may I aid you?

USER: I want to visit Lady Bird Lake at AUS, Can you please book a ticket for me?

ASSISTANT: Sure, May I know the travelling details?

USER: My journey dates are from 05/09 to 05/11.

ASSISTANT: Ok, Please provide me the source code.

USER: Source code: DTW.

ASSISTANT: Ok, Wait a while.

USER: Sure.

ASSISTANT: Thanks for waiting. Unfortunately, There are no flights found with your name?

USER: Ok, Thank you.

ASSISTANT: Thank you.