You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Sandra Walker.

ASSISTANT: How may I aid you today?

USER: I would like to fly IAH, so can you help me booking flight on 09/19?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please mention your source airport code name?

USER: My source airport code LGA.

ASSISTANT: Do you need any help from us, in return flight ticket booking process?

USER: I am going to return to LGA on 09/21, but provide flight with connection 1.

ASSISTANT: Ok, just give me a moment, I will check flight availability.

USER: Ok, I will wait for your response.

ASSISTANT: There is a flight available as per your requested details, airline is Southwest and flight number is 1003. Shall I proceed?

USER: Ok, proceed to booking Southwest airline.

ASSISTANT: Your flight ticket is successfully booked.

USER: Thank you for confirming my flight ticket.

ASSISTANT: Thank you for reaching us, have a nice day.