You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Benjamin Miller here.

ASSISTANT: Do you want me to help you with anything?

USER:  want to book a ticket to attend a function at home, hope you're helping me out with booking ticket from LAS to HOU.

ASSISTANT: On which date your are travelling?

USER: I would like to travel on 10/11 and 10/13.

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: I am sorry to say that there is no flight found.

USER: It's ok, not an issue. Thank you.

ASSISTANT: Thank you for contacting us.