You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Laura Allen.

ASSISTANT: How may I assist you today?

USER: I am planning to go for my sister's marriage to LAS, Can you please book a ticket from ORD?

ASSISTANT: Sure, I am here to help you. Can you please mention the planned dates to travel?

USER: My journey dates are 04/06 to 04/08.

ASSISTANT: Ok. No flights are found on your route.

USER: No problem. Thank you.

ASSISTANT: Thanks for reaching us.