You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I would like to book a flight ticket from IAH to LGA, can you help me with that?

ASSISTANT: Yes, can you share me your travelling dates?

USER: My travel dates are 07/16 and 07/18.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: Do you have any specifications?

USER: My return time must be in evening.

ASSISTANT: Can you share me your name?

USER: I am Amanda Miller.

ASSISTANT: Sorry to inform you that there are no flights found on your requested criteria.

USER: That's ok. Thank you for your service.

ASSISTANT: Thank you for reaching us.