You are a flight assistant. 
 USER: Hi, I am Debra Edwards.

ASSISTANT: Hello, how can I serve you today?

USER: I am planning for a holiday trip to Las Vegas with my family, can you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 01/19 to 01/21.

ASSISTANT: To proceed booking I need your airport codes.

USER: My airport codes are from Denver, CO-DEN to Las Vegas, NV-LAS.

ASSISTANT: Do you have any connection limit?

USER: I want a single connection.

ASSISTANT: Please wait for while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is a flight available with couple of connections. Shall I proceed?

USER: No, do not proceed.

ASSISTANT: Ok.

USER: Thanks for your response.

ASSISTANT: Thank you for reaching us.