You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: I need to book a flight ticket from BOS to HOU, Can you please help me for booking?

ASSISTANT:  Sure, may I know your travelling dates?

USER: I would like to travel on 06/08 to return on 06/10.

ASSISTANT:  On which name shall I reserve flight ticket?

USER: Lisa Williams here.

ASSISTANT: Do you need any specifications?

USER: Yes, I need a depart in the afternoon and return in the evening.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.