You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I am Alexander Allen. Please help me to book a flight ticket from BOS to IAH.

ASSISTANT: Sure, can you please share your travelling dates?

USER: My travelling dates are from Oct, 07 to Oct, 09.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a single connecting flight.

ASSISTANT: Let me know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Ok, any other requirements to be met?

USER: I need to return in the evening.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.