You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Gary Thomas here.

ASSISTANT: How can I aid you?

USER: I am looking for a flight ticket with morning as the depart time. So can you book it for me?

ASSISTANT: Sure, We are here to help you.

USER: I am looking for a single connecting flight.

ASSISTANT:  Ok, Can I know your travelling dates?

USER: Yes, the travel dates are from 07/01 to 07/03.

ASSISTANT: May I know your boarding and landing points?

USER: Yes, my airport codes are from IAD to DFW.

ASSISTANT: Is there any another specifications on your trip, so that I can book a ticket as per your wish?

USER: No, that is it.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: That is not a problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you.