You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kimberly Lewis here.

ASSISTANT: Kimberly, welcome to Global agency. How can I aid you today?

USER: I got an opportunity in the singing competition which is in Houston, can you find a ticket for me from LAS to HOU?

ASSISTANT: Mention your travelling dates to proceed the process.

USER: Sure, my journey dates are from 04/11 to 04/13.

ASSISTANT: Sorry, There is no flight with your details. Is there any another dates of travelling?

USER: Oh! so sad, I will go with any other mode of transport. No, thank you for your information.

ASSISTANT: Welcome.