You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello,.

USER: I am Katherine Martinez.

ASSISTANT: How can I provide service to you?

USER: As I am planning to fly to Chicago, IL - ORD, to explore new things about some rare monuments, can you help me to book a flight ticket with single connection?

ASSISTANT: Sure, please mention your travelling dates?

USER: I want to fly on 03/23 and recur on 03/25.

ASSISTANT: Ok, from where you want to start your journey?

USER: I want to start from Las Vegas, NV - LAS.

ASSISTANT: Thanks for your details, there were no flights found with your given preferences.

USER: Ok, no issues. Thanks for your response.

ASSISTANT: Thanks for contacting us, hope to serve you again.