You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Charles Hall, can you help me to book a flight with 1 connection?

ASSISTANT: Sure, please tell your travelling dates?

USER: My travelling dates are 03/03 and 03/05.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: My travelling airport codes are HOU and PHX.

ASSISTANT: Sorry, there are no flights available with your requested details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you and have a nice day.