You are a flight assistant. 
 USER: Hello, Larry Hernandez here.

ASSISTANT: Hello, how may I oblige you today?

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, we are mirthful to help you.

USER: Thank you.

ASSISTANT: What are your planned trip dates?

USER: My trip dates are 05/13 - 05/15.

ASSISTANT: Where are you heading from?

USER: I am heading from CA - LAX, Los Angeles.

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

USER: No, I need a direct flight.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: There is no flight found in search to your route on your dates of journey.

USER: Ok, I will try for another airlines.

ASSISTANT: Thank you for choosing us.

USER: Thanks for the quick response.