You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to attend my friend's birthday at Denver, please help me in booking a ticket.

ASSISTANT: Ok, may I know your journey dates?

USER: My journey dates are from 09/08 to 09/10.

ASSISTANT: What are your airport codes for this journey?

USER: My journey airport codes are from BOS to DEN.

ASSISTANT: Meanwhile, may I know your name?

USER: My name is Karen Davis.

ASSISTANT: Flight-1023 is available for you with 1 connection at the price of 300, can I book it?

USER: Please check the fare with 200.

ASSISTANT: Sorry, no flights with your budget. Thank you for reaching us.

USER: Ok, no issue. Thank you for your information.

ASSISTANT: Have a great day.