You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I want to attend my aunts house warming ceremony at CO-DEN. Can you help me to book a flight ticket?

ASSISTANT: Sure, please mention your source airport code?

USER: I would like to board on NV-LAS.

ASSISTANT: May I know your journey dates?

USER: My travelling dates are 12/19 and 12/21.

ASSISTANT: Please share your price limit?

USER: 200 is my price.

ASSISTANT: Ok, please wait a minute. I will check the availability.

USER: Ok.

ASSISTANT: Thanks for your patience. There is a flight found with UA airlines and flight number is 1021.

USER: You can proceed with this airline.

ASSISTANT: May I know your name?

USER: I am Brenda Clark.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for opting our service.