You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Matthew Smith.

ASSISTANT: How may I help you?

USER: I am search a flight from the airport DTW to LAX. Can you please help me in booking?

ASSISTANT: May I know your trip dates?

USER: Thank you. My planned travel dates are 08/20 and 08/22.

ASSISTANT: Please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no flight found with your details.

USER: It's ok, thank you for searching.

ASSISTANT: Thank you for reaching us.