You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am looking for a flight from SEA to SFO, can you help me in booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: My planned travel dates are June 17 and June 19.

ASSISTANT: On which name shall I reserve flight ticket?

USER: Please reserve the ticket on the name Ashley Walker.

ASSISTANT: Do you need any specifications?

USER: I prefer for a business class.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait for your response.

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

USER: That's ok, no problem. Thank you for the information.

ASSISTANT:  Thank you for reaching us.