You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am looking to reserve a flight ticket to reach Los Angeles, could you please find a flight from Houston?

ASSISTANT: Sure, please share me your trip dates.

USER: The planned trip dates are June 07 and June 09.

ASSISTANT: May I know your source airport code?

USER: The source airport code is IAH.

ASSISTANT: Please share me your connection limit.

USER: I mostly prefer a single connecting flight.

ASSISTANT: Is there any class preferences for you?

USER: No, I didn't have any class preference.

ASSISTANT: Please mention your good name.

USER: My name is Rebecca Parker.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: It's ok, not a problem with that. Thank you for checking  the flight availability.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.