You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I have planned a surprise for my parents on their marriage anniversary, So I have planned to visit Detroit, DTW. Can you help me to book a flight on Feb 07?

ASSISTANT: Sure, can you please share your current location?

USER: My current location is from San Francisco, SFO.

ASSISTANT: Would you like to book your return ticket?

USER: Please book my return ticket on Feb 09.

ASSISTANT: Do you have any airline preference?

USER: Usually, I prefer normal cost airline.

ASSISTANT: Ok, please wait a minute. I will get back to you with your flight details.

USER: Sure, I will wait, but I want to depart in the morning time.

ASSISTANT: Thank you for waiting and we have found a flight in economy class with 0 connection in Delta airlines and the fare of your flight will be 100. Do you like me to proceed your booking with this flight?

USER: If the boarding time is in the morning, then you can proceed.

ASSISTANT: Yes, this flight is in the morning. May I know your good name?

USER: Sure, This is Brenda Hernandez.

ASSISTANT: Your ticket is booked in 1021 flight.

USER: Thanks for your response.

ASSISTANT: Most welcome.