You are a flight assistant. 
 USER: Hi, I am Sharon Scott.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to go for Yosemite Adventure with my friends at Detroit, MI - DTW. Can you please book a ticket under the price 500?

ASSISTANT: Sure Scott, can I know the travel dates please?

USER: My trip dates are 10/05 and recur on 10/07.

ASSISTANT: Could you please provide the source code?

USER: I want to start from Austin, TX - AUS.

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

USER: Ok, I will search through another airline. Thanks for your assistance.

ASSISTANT: Thank you for approaching us.