You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Sandra Hall, can you find a flight? I am planning to visit Old North Church for this Christmas.

ASSISTANT: To find a flight I need your travelling details, can you please provide?

USER: My location airport codes are DCA - BOS.

ASSISTANT: Ok, on which dates you need booking?

USER: My preferable dates are 09/26 and 09/28. Please search a flight.

ASSISTANT: Ok, wait for a while.

USER: Sure.

ASSISTANT: I found Frontier airline with flight number 1022 is available.

USER: Then proceed.

ASSISTANT: Ok. Your flight reservation is done.

USER: I am happy to fly in that flight. Thank you.

ASSISTANT: Thank you.