You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: I would like to book a flight ticket from IAH to OAK, can you please help me?

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are Mar 31st and Apr 2nd.

ASSISTANT: Do you have any requirements?

USER: I am looking for a connecting flight.

ASSISTANT: Can you mention your name please?

USER: Eric Clark.

ASSISTANT: Sorry, no flights found as per your requirement.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for contacting us.