You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Kathleen Roberts. Can you please book a ticket on 03/31 and 04/02?

ASSISTANT: Sure, we are here to help you. Can you provide me your airport codes?

USER: My source airport code is DCA and destination airport code is IAH.

ASSISTANT: Do you need any halts in between your journey?

USER: I need a connecting flight.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there is no flights found on your details.

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

ASSISTANT: Thanks for choosing us.