You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I aid you?

USER: I am Frank Scott from Houston. Could you please book a ticket to New York with a connecting flight?

ASSISTANT: Sure. Please share me your airport codes.

USER: Houston airport code is TX-HOU. And New York airport code is NY-LGA.

ASSISTANT: When would you like to travel?

USER: I would like to travel on 02/13 and return on 02/15.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for approaching us.