You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amy Roberts.

ASSISTANT: How can I help you?

USER: I want to book a flight ticket from DTW to DCA, can you help me with booking?

ASSISTANT: Sure, please share your planned travel dates to proceed further.

USER: My travel dates are Feb 09 and Feb 11.

ASSISTANT: What time do you prefer to depart and return?

USER: My return time is morning.

ASSISTANT: Sure, in which class do you want to travel?

USER: I am fine with any class.

ASSISTANT: Do you have any other preference?

USER: I need a connecting flight.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.