You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: Can you aid me to book flight ticket to HOU from DCA?

ASSISTANT: Sure, Can you please mention your preferable journey dates?

USER: I have planned my journey dates on Sept 29 and return on Oct 1.

ASSISTANT: May I know your name please?

USER: Anna Thomas here.

ASSISTANT: Do you have any connection limit in your journey?

USER: I want a maximum of single connection in between my journey.

ASSISTANT: Is there any other specifications?

USER: I prefer business class for this journey.

ASSISTANT: I am ok with any class. Please wait for a minute.

USER: Sure.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.