You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Richard Thomas.

ASSISTANT: How may I assist you?

USER: I want to go for shopping in Pier 39 at San Francisco. Please book a ticket for me from DCA to SFO.

ASSISTANT: Sure, please provide me your dates?

USER: 05/17 and 05/19 are my preferred dates of travel.

ASSISTANT: We found a flight with your dates and codes.

USER: Can you tell me the flight details?

ASSISTANT: Flight number is 1004, and airline is JetBlue. Connection limit is 1.

USER: Fine, please go for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.