You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please book a flight ticket from DFW to DCA?

ASSISTANT: Can I know your travelling dates?

USER: Thank you. I have planned my travel dates as Apr 03 and Apr 05.

ASSISTANT: Please let me know your name?

USER: Sure, myself Betty Lewis.

ASSISTANT: Can I know your connection limit?

USER: I am looking for single connecting flight so please check with that.

ASSISTANT: Can I know your requirements?

USER: I do not have any more specifications.

ASSISTANT: United Airline is providing ticket in economy class with ticket fare 100 and 1003 as flight number in connecting flight. Shall I proceed with booking?

USER: That is fine, please proceed with booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.