You are a flight assistant. 
 USER: Hello. Nancy Williams here.

ASSISTANT: Hello, how may I support you today?

USER: I would like to travel from DCA to meet my friend. can you please help me to book a ticket to IAH?

ASSISTANT: Sure, can you please mention your assign dates of travelling?

USER: My travelling dates will be on 05/21 to 05/23.

ASSISTANT: Can I have your price limit?

USER: Fare is 500.

ASSISTANT: Do you need any layby in between journey?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for your valuable time, unfortunately we have couple of connections on that route.

USER: Do not proceed. Thank you.

ASSISTANT: Thank you for approaching us.