You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Lisa Evans this side, I am having an business meet with my clients at Washington. Can you help me to book a ticket?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am planning to start on 05/04 and return on 05/06.

ASSISTANT: Ok, may I know your airport codes please?

USER: Look for the flights running from PHL to DCA.

ASSISTANT: Ok, hold on for a moment.

USER: I want flight with 1 connection.

ASSISTANT: I found a flight for you with AA airline and it costs you 100.

USER: Please book it.

ASSISTANT: Shall I proceed? Your ticket has been booked with 1026 flight number.

USER: Thank you for your help.

ASSISTANT: Welcome, thank you for reaching us.