You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please book a flight ticket with the name of Emily Lewis?

ASSISTANT: May I know your trip dates?

USER: My journey dates are on July 30th and Aug 1st.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: My airport codes are, PHX to DCA.

ASSISTANT: Do you have any class preferences?

USER: I prefer economy class.

ASSISTANT: Do you prefer any specifications?

USER: No.

ASSISTANT: There is a connected flight in AA airlines with the fare 100.

USER: Ok, proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thank you for the help.

ASSISTANT: Thank you.