You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Can you help me in booking from HOU to LAS, as there is a musical concert to participate?

ASSISTANT: Ok, please can I know the dates of your journey?

USER: My journey dates are Apr 20 to Apr 22.

ASSISTANT: Ok, please can I know your name?

USER: I am Eric Brown.

ASSISTANT: Ok, is there any preference regarding the connection limits?

USER: I am looking for a stopover flight in normal-cost airline.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

ASSISTANT: Sorry, there is no flights available under normal-cost airlines to reserve a ticket.

USER: No issue, thank you for checking.

ASSISTANT: Ok, you are welcome. Thank you for choosing our agency.