You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Pamela Green.

ASSISTANT: How can I help you?

USER: I want to book a economy class flight ticket from HOU to DCA, can you please help?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your travelling dates please?

USER: I will depart on July 11th and return on July 13th.

ASSISTANT: Do you need any halt in between the journey?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Ok, Do you have any other preferences?

USER: I am looking for a normal-cast airline which returns in the morning.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry we didn't find any flights with your details.

USER: No worries, thank you for checking it.

ASSISTANT: Thank you for reaching us, have a good day.