You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I planned to meet my friend in ORD, can you please help me to book a flight ticket from IAH?

ASSISTANT: Sure, may I know the planned travel dates?

USER: I prefer to travel on Apr 16 and Apr 18.

ASSISTANT: Please provide me the specifications.

USER: I prefer to travel in a connecting flight.

ASSISTANT: May I know the name?

USER: I am Susan Parker.

ASSISTANT: Sorry, there are no flights are available for your desired intent.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.