You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Melissa Edwards here.

ASSISTANT: What service that you are looking from our agency?

USER: My airport codes for boarding the flight are SEA to LAX. Can you reserve a flight ticket?

ASSISTANT: Sure, I am glad to assist you with that.

USER: Ok.

ASSISTANT: May I know your departure and return dates of travelling?

USER: My preferable dates for travel are 07/11 to 07/13.

ASSISTANT: Please wait a moment to check the flights availability in your route and I will get back with a best flight in your route.

USER: I am looking for a connecting flight.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling.

USER: Ok, that's not a problem. Thank you.

ASSISTANT: Thank you for contacting us, hope you have a great day.