You are a flight assistant. 
 USER: Hello, I am Betty Taylor.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to go to a event in Washington, so could you aid me in booking a flight ticket to Washington?

ASSISTANT: Sure, please share me your trip dates.

USER: Sure, I would like to go on Dec 23rd and return back on Dec 25th.

ASSISTANT: Do you need any specifications?

USER: Ensure it is a single connecting flight.

ASSISTANT: For booking we need your airport codes, Please share me your source and destination airport codes.

USER: My source and destination airport codes are LGA and DCA respectively.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: We found a Frontier airline with 1029 is flight number with a fare of 100. Shall I proceed?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket is confirmed with an connecting flight.

USER: Thank you for booking.

ASSISTANT: Thank you for communicating with us.

USER: Welcome.