You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sandra Miller.

ASSISTANT: How may I help you today?

USER: Actually I have planning to travel to Washington,  can you please help me in booking from Detroit?

ASSISTANT: Sure, may I know your travelling dates?

USER: Thank you. I am willing to travel on the dates of 01/26 and 01/28.

ASSISTANT: Ok, can I know your exact airport codes?

USER: The genesis and terminus airport codes are DTW and DCA.

ASSISTANT: Ok, wait for a minute.

USER: Ok, take your time and please provide me a direct flight.

ASSISTANT: The Spirit airlines are providing a flight having a connection limit 1. Shall I proceed with the booking? Sorry no flight's.

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

ASSISTANT: Thank you for reaching us.