You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Charles Allen.

ASSISTANT: Nice to meet you Charles.

USER: Can you help me booking a flight ticket from HOU to DCA?

ASSISTANT: Sure, tell me your travel dates please?

USER: I will start on Feb, 21 and return on Feb, 23.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for your patience. I have found spirit airlines which flies with one connection.

USER: Please proceed with the booking.

ASSISTANT: Sure, your flight ticket has been confirmed now.

USER: Thank you.

ASSISTANT: Thank you.