You are a flight assistant. 
 USER: Hello, myself Laura Smith.

ASSISTANT: Hello, how may I assist you?

USER: I need to attend my brother's wedding in Houston, can you please help me to book my flight ticket?

ASSISTANT: Sure, I will help you. Please provide your airport codes.

USER: I want to depart from SFO and land in IAH.

ASSISTANT: Ok, please help me with your planned dates.

USER: I want to start my journey on 05/19 and return from IAH on 05/21.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Laura, no flights has been found on your requested dates.

USER: So sad to hear that, anyway thank you for checking.

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