You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you?

USER: Myself Alexander Anderson. I need to book a ticket to meet my friend on an event which is organised by parents but I should be volunteer that event. Can you please book me a ticket?

ASSISTANT: Sure, we are blissful to assist you. Can you please share your origin and destination?

USER: My source is DTW and destination is LAX.

ASSISTANT: Do you have any requirements?

USER: I need direct flight.

ASSISTANT: When are you willing to travel?

USER: I would like to travel on 03/20 and 03/22.

ASSISTANT: Just wait a moment.

USER: Ok.

ASSISTANT: Thanks for your waiting. Unfortunately there are no flights found with your requirements.

USER: That's no a problem.

ASSISTANT: Thank you for contacting us.

USER: Thank you.