You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Larry Martinez.

ASSISTANT: How can I assist you?

USER: I am planning to travel form DCA to PHX, help me in booking a flight?

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are are 10/14 to 10/16.

ASSISTANT:  Here is a connecting flight with fare 200 and 1004 as flight number in economy class. Shall I proceed with booking?

USER: Proceed for booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.