You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide service to you?

USER: I'm planning to attend my sister's baby shower party, can you book a ticket form IAH to lAS?

ASSISTANT: Sure, may I know your good name?

USER: My name is Linda Taylor.

ASSISTANT: Could you please provide your planned travel dates?

USER: Sure, my planned departure and return travel dates are 18th and 20th of March.

ASSISTANT: Do you prefer a stopover in between your journey?

USER: No, I need direct flight only.

ASSISTANT: Is there any more specifications?

USER: No, I don't have any other specifications.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Sure, make it fast.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you for opting us.