You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Timothy Baker.

ASSISTANT: How may I help you?

USER: I need a connecting flight to Houston, HOU under a fare of 500, can you make a reservation for me?

ASSISTANT: Please specify your origin airport code.

USER: Ok, my origin airport code is Chicago, ORD.

ASSISTANT: Could you please mention your travel dates?

USER: Sure, my travel dates are 03/31 and 04/02.

ASSISTANT: No flights found according to your requirement.

USER: Ok, not a problem.

ASSISTANT: Thanks.

USER: Thank you for the information.