You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Janet Jackson.

ASSISTANT: Jackson, how may I guide you?

USER: I am planning to book a ticket to attend a meeting at IAH. Can you please help me out to book a ticket from HOU?

ASSISTANT: When would you like to travel?

USER: I would like to travel on 01/15 and return back on 01/17.

ASSISTANT: Just a moment.

USER: Sure, I will wait.

ASSISTANT: Jackson, sorry to inform that no flights are available on your prefer dates.

USER: That's fine. Thank you for your service.

ASSISTANT: You are most welcome, Thank you Jackson for contacting us.